You could present literally the same arguments for why teenagers would never drink alcohol. Its against the law for them to purchase right, so its an inconvenience to access, so clearly they would all abandon it as all their friends become unable to access it as well. You could make the same argument for most kinds of bans. There are actually very few things for which imposing barriers to access has ever eliminated its use. Porn is an obvious example as well. Porn bans are essentially meaningless to consumers. They are so trivial to bypass as to be functionally non-existent. The only thing that imposed bans have done is make it difficult for companies to profit off of it. I am essentially ambivalent about that, but it’s a literal direct parallel in this case.

What is likely is that tools for circumventing in simpler faster ways will develop. Installing a VPN is already a single click operation. You dont have to do anything else. Teenagers are not going to abandon social media. Maybe you havent encountered many in the past 2 decades, but social media use is and has been near universal among them since social media came to exist. Like you’re nuts if you think they’re actually going to stop using it haha I dont know what else to say. But yeah maybe youre right. Making stuff against the law totally eliminates it because everyone is so lazy and incompetent they won’t expend any effort to overcome trivial barriers to access things they have built their entire lives around lol