What do you consider "healhty", though? It's a very broad term that doesn't actually mean much on its own.

> What do you consider "healhty", though?

Whatever you want. Substance abuse rates. Marriage or long-term partnership rates. Employment. Income. Wealth. Serum cortisol.

My assumption is someone actively participating in something, even something unhealthy, is going to maintain cognitive and executive function above someone simply observing. (To the degree these games may be destructive, I'd argue it's in its game mechanics.)

We have no evidence pornography causes negative outcomes across population. (Versus among a vulnerable subset.) We have lots of evidence for social media addiction causing broad psychological issues, particularly in children.