I feel the natural modern protest action is to starve ravenous information collectors as much as feasible. But as with others in the self-hosting movement, I've always been part of it, haven't stopped hosting the things I care about myself. Many of us never got into the habit of feeding the insatiable information machines. Why post photos to Facebook or Instagram when you can just put them on a web server; why involve a third party at all?
But the user interfaces of self-hosting and decentralization as a broader concept are way behind centralization. There's a lot of ground to cover. Still, I am happy to see gradual growth in interest. Gradually, even for novice self-hosters, it's going to get simpler to post photos onto that personal web server and let friends know where to find them without involving a data-hungry third party.