I'm not saying that, nor did I allude to it in any way. I made no assertions as to what the solution should be.
The ideal scenario would be everyone choosing not to engage with these predatory platforms. Going from there, the right question to me is what steps we have to take as a society for that to become even remotely realistic and, subsequently, what role governments can or should have in that.
For starters, I would be in favor of fines that actually hurt the bottom line instead of this "cost of business" bullshit. We have handed these corporations unprecedented access to and control over our lives, to the point that they erode democracy and the social fabric itself. The inevitable abuse of that power when it comes with barely any strings attached needs to be punished in a way that makes it unattractive as a business model at the very least.
Instead of lowering the attack surface by locking out kids, and in turn introducing mass surveillance which at best also lends itself to abuse, the root issues of ruinous greed and lack of accountability need to be addressed. The whole concept that there is no price too high for profits needs to burn. Social media is just one of the more recent manifestations of it.