Well-funded criminal networks like the ones in the video you linked would have little issue if all e2ee chat apps disappeared tomorrow, they have enough money and operational incentives to pay someone to make custom encrypted chat apps (not to mention the myriad of open source ones available).

The only people actually hurt by banning e2ee are regular people.

> It's like trying to pretend people are shopping for regular items on .onion webshops rather than for contraband. I'm sure that crowd exists, but like, who are we trying to fool here exactly?

Based on public metrics, 3% of Tor traffic is .onion traffic and it is incredibly likely the vast majority of that is the Facebook .onion service (based on some stats posted by Facebook a few years ago).

So no, I think the burden of proof falls on you to show that the vast majority of .onion usage is illegal.