I think it has more to do with all that evaluation being propped up by the idea that AI will be massively profitable. All the things you mention were true five years ago when their evaluation was less ridiculous. When Nvidia’s stock evaluation falls they’ll be fine. I think the rest of the market is going to take a big hit and I expect a recession is inevitable.
All of these are individual actions. I’d add organizing with other folks trying to make a difference. Direct action or political advocacy can have a much more significant effect than an individual acting alone.