I don't have a great answer here, but one of the things that I think caused public opinion to shift is when people started realizing how truly massive they had gotten. It's possible to avoid Facebook, Apple, Amazon, and Netflix, but by 2015 it started to become nearly impossible to avoid Google or their products.
Not sure if that's the reason public opinion shifted, I'd started to get worried about the same time I also dropped my Facebook account, so ~2011. I have successfully managed to avoid Facebook products and tracking, but I had to give up on avoiding Google, it's simply not possible unless one is willing to make extreme sacrifices. So i kinda gave up, it was starting to become digital masochism. There's a very bitter irony in me typing this on a pixel 8,but I've just accepted that there isn't any avoiding Google tracking my online life so I've just stopped caring as much as I used to.