As a left-leaning tech worker, I don't have a more satisfying answer for you than that I think the left-wing position is correct (realistic, just, etc.)
Part of why it's surprising, I suppose, is the presumption that those making lots of money would tend to be libertarian, since libertarian principles (lower taxes, lower regulation, etc.) would yield higher profits. But I believe tech workers (myself included) make too much money. I don't work harder than, say, the in-house chef at my employer, the construction worker building our new buildings, the folks digging new subway tunnels, etc. I'm self-serving (i.e., a rational agent) in that I'll take the highest-paying job available to me, but I don't have it in me to be self-serving to the extent of saying, this state of affairs is good and we should support it long-term. It often feels like the only reason I need this much money is to keep up with people making even more money than me driving inflation in housing etc. prices, and I have no inherent interest in playing that game. (To be clear, there are reasonable arguments that I should be making as much money as I do, that my contribution to society is greater, etc. I don't think someone who holds such beliefs is a bad person - I'm just reporting on my beliefs and those of many of my peers.)
I also see that making more money is how you get leverage to influence society, so I optimize for putting money into my hands - which is unrelated to whether the direction I want to take society ends up with more money in my hands.
I also suspect a lot of tech workers, by being at profitable and highly-automated business, are more likely to believe in the feasibility of a highly-automated society that puts money in everyone's hands regardless of how hard they work (think Star Trek, or the "fully automated luxury space capitalism" meme, or whatever). We see huge profits coming from collectives without an individual profit motive (aka "the engineering department") and not as much from rugged individualism, so we're more skeptical of the necessity of right-wing market-based solutions to improve society.
As a moderate Libertarian tech worker I would have to give the same answer. I hold my position not just because I don't want to pay too many taxes, but because I find the position to be the correct one.
I think that pay has very little to do with effort of the worker. As you mentioned, lot of people work harder and put more effort while making less money than others. IMO the argument that effort should be used as a measure for pay can easily be invalidated with this reductio ad absurdum:
If you pay me for the effort I put on my work I would make more money by carrying a heavy rock back and forth all day than to work on most of the jobs available today.
As economy theory goes, labor is a commodity and, as such, subject to the law of supply and demand. That's really it, there is no other way at the moment to assign salaries. Yes you can reduce inequality with taxation. But there is an inverse correlation between taxation an economic growth, even though there are some exceptions.
My thoughts on automation are that, yes, automation displaces jobs, but it also reduce prices (not just of the final products but those of capital goods used to produce them too), so, while I don't know how a close-to fully automated society will look like I'm sure resources will still need be allocated based on demand from consumers and the economic output will be limited, hence there will still be a concept of markets and currencies. My guess is that Capitalism will be partially automated itself. We will probably need some limited redistribution for those that initially own no shares in automated companies, allowing them to live and invest in these, or to buy automation capital goods to create new automated companies.
Part of why it's surprising, I suppose, is the presumption that those making lots of money would tend to be libertarian, since libertarian principles (lower taxes, lower regulation, etc.) would yield higher profits. But I believe tech workers (myself included) make too much money. I don't work harder than, say, the in-house chef at my employer, the construction worker building our new buildings, the folks digging new subway tunnels, etc. I'm self-serving (i.e., a rational agent) in that I'll take the highest-paying job available to me, but I don't have it in me to be self-serving to the extent of saying, this state of affairs is good and we should support it long-term. It often feels like the only reason I need this much money is to keep up with people making even more money than me driving inflation in housing etc. prices, and I have no inherent interest in playing that game. (To be clear, there are reasonable arguments that I should be making as much money as I do, that my contribution to society is greater, etc. I don't think someone who holds such beliefs is a bad person - I'm just reporting on my beliefs and those of many of my peers.)
I also see that making more money is how you get leverage to influence society, so I optimize for putting money into my hands - which is unrelated to whether the direction I want to take society ends up with more money in my hands.
I also suspect a lot of tech workers, by being at profitable and highly-automated business, are more likely to believe in the feasibility of a highly-automated society that puts money in everyone's hands regardless of how hard they work (think Star Trek, or the "fully automated luxury space capitalism" meme, or whatever). We see huge profits coming from collectives without an individual profit motive (aka "the engineering department") and not as much from rugged individualism, so we're more skeptical of the necessity of right-wing market-based solutions to improve society.