I absolutely HATED the first time I had to deal with it... at least now it works a little better.. but the first version didn't actually tell you that you needed to go into security settings right after to enable the install.
Still not a big fan of it... though admittedly mostly just install stuff via brew/cask more than direct downloads as a result.
...which is so much of a complicated nuisance that most people simply give up. If this will go the way I think it will prepare to have to skip 10 things, write 3 ADB commands and submit a video of you spinning around for 30 seconds just to install your pirated game.
Just to install a proper call recorder or a better Work Profile manager.
Turning a possibility to install software outside of the app store should be about as normal as the fact you're using a laptop or desktop to install your pirated games.
Yeah, you.
If someone having access to "side load" an app has it to install a pirated game, then you have your OS, where you are not limited only to Apple/Amazon/Google store, simply for installing pirated software.
You want to talk about confusing Grandma? Why isn't Lastpass the first entry on the App Store when you search for it verbatim? At the going rate, installing signed software is more deceptive than searching for the official installer online.
That's true but does not detract from the GPs main point: if you are curating your app store then you should do a proper job of it or you lose the curation argument.
A single scary warning per source (ie per new certificate that you choose to trust) would be fine. If I had to jump through a few hoops to install f-droid on a stock device that would be fine. But once I've authorized f-droid the OS needs to shut up and stay out of the way for good. No "are you sure you want f-droid installing this other thing" nonsense.