> don't waste too much time and attention on things you don't really enjoy
all the way to
> delete every social media account, never listen to a podcast or an audiobook, don't watch any videos, throw out your phone, and if you ever even glance at a screen for reasons other than work, your precious brain will be damaged
The first position seems reasonable to me. The second one is only mildly exaggerated from an opinion a lot of people actually seem to have, it's pseudoscientific at best and it's just a reason for people to feel smug about themselves while achieving absolutely nothing (or to feel bad about themselves when they fall short).
In some ways it's similar to the "nofap" community where a very small group of people with porn addictions or sexual health problems snowballed into a large cult full of people who all think that any form of masturbation is always wrong. The similarities are in all the talk about your brain "resetting", the fact that they take some reasonable idea and distort it to an extreme, and of course the lack of evidence and all the broscience that's used to justify all of this.