BS, nobody wants to sideload another app store. If they want to pay for sketchy software they get it off a dark web site and sideload that. Even if you wanted to install recreational_drugstore.app to have the convenience of a wraparound consumer experience for designer dugs, would you really want a dark web originated app hooked up to your crypto wallet or fiat payment methods?

Get real, Apple's target demo is upper-middle class people who want a frictionless computing experience - the kind of people whose response to a massive avoidable security fail would be litigation and political/regulatory action.