Any doomscrolling effect on mental faculties in 20-30 years would be completely dwarfed by the effect of AI. It won't even be a rounding error.

I just posted on another thread where someone was proudly showing off a piece of software that they vibed. Even a single minute of googling would have shown them that their goal was already achievable on current linux distros without any extra software, but now we have someone who could have learned something instead remain completely ignorant.

Doomscrolling has nothing on the +ignorance that all-in AI users are experiencing, especially since they can't tell that they're getting objectively dumber.