But consider for example the link between violent video games and prosocial outcomes. The effect sizes are tiny. The downsides of additional filters will very likely outweigh anything that can be gained regarding mental health and childhood development etc. I'd wager there are much much more effective ways of improving quality of life, e.g. improving community life, reducing working hours, reduce economic inequality etc.

https://link.springer.com/article/10.1007/s10964-019-01069-0

https://www.mayamathur.com/publication/metawarspreprint.pdf