There's no way to reel it back. You said it here though:

> Some people have the discipline to push back, but many do not

This is simply a genetic selective filter that will destroy some people while others make it through, and there will need to be an overall adaptation against finding fake slop debilitatingly addictive. Like drugs, alcohol, porn, food, opiates, etc and other things some can resist and are able to abstain while some can't. I used to worry so much about these things in aggregate but I realized it's too pervasive to eliminate and impossible to change people's nature when it comes to resisting it or even worrying about it as a problem to avoid, so simply resisting better than others and having children that hopefully are able to overcome and avoid by way of finding more value in real experiences is the only successful outcome.

If one has to really really think hard about and try really really hard to overcome, then they're probably just not going to make it... and we all know for many people avoiding addictions comes easy. This chasm of reaction to stimulus means there will be divergent outcomes. It can't be any other way.

This is provably wrong. Preventative public health measures against for instance cigarettes and nicotine reduce uptake, reduce consumption and increase quitting. [1] In the case of smoking, this also cut second-hand harm/death from smoking. Similarly, preventative measures have first order and second order benefits for alcohol and other drug consumption.

Just giving up on those who show higher likelihood for addiction is a travesty. Failure to eliminate an addiction is no reason to give up reducing its harms, both to the person themselves, family and friends, and wider society.

[1]: https://tobaccocontrol.bmj.com/content/21/2/172

<< It can't be any other way.

This seems ridiculously fatalistic and weirdly binary way of looking at things. Best I can start with is 'why?', because to a simple person like me it could be any number of ways..

It appears that the current content systems have some correlation in lowering the fertility rate; in that case they will be self-limiting after all, just not in the way OP mentioned about the other vices. It will be interesting indeed how things look after a generation or two.