I think more responsibility should be on the individual and responsibility on the parents for minors.

At least we can agree on that.

I do think that we should expect easier parental controls with more granular settings to be able to allow parents to protect their kids from risky trades

Steam has an entire parental control setup with family view where you can completely restrict your children from purchasing or selling anything without your consent.

https://store.steampowered.com/news/app/593110/view/4149575031735702628