I did the setting changes. Now the process monitor on my MBP (Yosemite) shows a bunch of "Google Chrome Helper" not responding in red. Not sure this has saved battery but seems battery goes out even quicker.
I am not him, but on one older Mac, I am running Snow Leopard because it's the last OS X I can run on a 32bit computer.
And yes, I know, it has all the terrible ShellShock bugs and other stuff that will never be fixed, but I just need to run some OS X software time from time and I won't buy a new Mac because of that.
And when I tried to install Linux on that, Wi-fi didn't work properly, and there were some other issues I had with I think rebooting and maybe some other hardware stuff (I know, it sounds like a cliche, but it's true)
Thanks for the honest reply. I wasn't trying to be judgemental, just trying to understand specific reasons, rather than admit the nebulous cloud of "because".
And that's pretty much why Google built Google Web Designer[0] - because advertisers are going to want their media to run on all browsers, even ones without Flash.
I do all my rewriting with a proxy (in my case glimmer blocker, though I also had to implement my own man-in-the-middle SSL tool to make it work with https connections). I simply rewrite URLs, strip referrer tags, respond with empty files for domains I don't like, and rewrite pages to remove crud. It speeds up my browsing experience immensely and coincidentally improves my privacy somewhat.
I seems brain damaged to me to do it via a browser extension since I use multiple browsers, not to mention other programs that make http/https/ftp connections (e.g. RSS reader, mail reader etc).