[ddoolin]

Maybe this applies more towards adults, but I don't think the correct answer for kids is only "just have self-control," something kids are notorious for not having. Certainly there's a lot of parental responsibility here but we can simultaneously hold companies responsible for their part too.

[ValentinPearce]

It also is a situation where the ubiquity of these companies make it exceptionally difficult for parents to regulate access.

[freshtake]

This. Also, technology is ever changing, and expecting parents to constantly keep up with feature rollouts on these platforms is unrealistic.

Personal responsibility IS important, but we also don't allow cigarette companies to advertise on billboards with cute characters (remember Joe Camel?)