I see a lot of tech workers demonized for gentrifying neighborhoods in NYC, Chicago, Bay Area and Seattle, among other places. In my personal experience though, those people are buying the places they can afford as close to their work as possible. It's not that they're choose to displace people, it's that they're doing the best they can. They can't stay where they're from because there aren't actually good jobs for them there.
I think it's more about attitudes, like if you're cracking jokes about being a gentrifier as if it doesn't negatively affect other peoples' lives, then that's not good.
The other part is voting -- gentrifiers tend to vote for their own interests and may overlook or vote against efforts the people they're outclassing care about e.g affordable housing.
What would you suggest the alternative to be?