For me it’s a matter of settings. As a user I would have option to choose “secure” mode that disallow installing apps from unofficial sources, but if I want to I should have option to allow side loading. Everything else is just corporations need to have to much control.
The problem is that important services will then be (and already are!) only permitted to run in “secure” mode.
I literally have a banking app that will refuse to run on an “unsecure” phone. Today I can still install unsigned apps, but removing that ability is explicitly the goal of this policy change.
