As a parent who doesn't let their kids on social media (and seems to be one of a handful of parent who use parental controls on phones), the FOMO is very real with the kids. They don't understand why I'm such a terrible person that won't let them have access to things their friends do. Friends will come over for sleepovers, and our kids will sit on YouTube for hours with their friends because we never let them on it and that's all their friends want to do.
I don't know how to educate other parents to encourage more controls. Most are too busy to care it seems, the kids are content with their brain rot etc. I hate that these companies turn me into a villain with my kids because they produce hyper addictive crap without any constraints.