> I think it's a fair argument in this scenario to say that a platform has a better opportunity to protect minors if messages aren't encrypted
Would it be a fair argument to say the police have a better opportunity to prevent crimes if they can enter your house without a warrant? People are paranoid about this sort of thing not because they think law enforcement is more effective when it is constrained. But how easily crimes can be prosecuted is only one dimension of safety.
> However, an alternative could be allowing the sharing of the encryption key with a parent
Right, but this is worlds apart from "sharing the encryption key with a private company", is it not?
> Would it be a fair argument to say the police have a better opportunity to prevent crimes if they can enter your house without a warrant?
Police can access your home with a warrant.
Police cannot access your E2EE DMs with a warrant.
Yes, that is a fair argument and most countries allow the use of surveillance cameras in public for this reason.
> Would it be a fair argument to say the police have a better opportunity to prevent crimes if they can enter your house without a warrant?
This is a false equivalency. I don't have to use TikTok DMs if I want E2EE. I don't have a choice about laws that allow the police to violate my rights. I'm not claiming that all E2EE apps should be banned.
> Right, but this is worlds apart from "sharing the encryption key with a private company", is it not?
Exactly why I suggested that as a possible alternative.