Their advertising model certainly is a problem. But it isn't the only one, there are more and more users that demand other users be removed because of their opinion. When social networks started to listen to a few of them, they made themselves hostages to more demands. Platforms like Twitter or reddit certainly suffered from this.

I agree that ads are basically controlling most of the internet and public discourse now. Like you can't even use normal words in youtube videos anymore, because your video will be less visible/removed.

On the other hand, there are way too many people/accounts/bots out there that don't actually want to talk or discuss something, but spread false information and incite rage and anger. Those need to be moderated even harder than they already are, i think.