It's fine if it's the default honestly, as long as it exists as a setting you can change.

This is literally default Android setting, and it even shows scary dialog that sideloading can negatively impact your device.

Yet the EU got mad at android for ‘barriers’ to sideloading like this since it ‘unfairly’ makes it harder to install third party App Stores.

Agreed! macOS has really done a fantastic job balancing out the needs of security with usability.

They'll lock it down like an iPhone soon enough. The writing has been on the wall for years. Apple and Microsoft are frothing at the mouth to do this. But they have to do slowly boil the frog, because they know it's the only way people will accept these kind of changes.

> The writing has been on the wall for years

People have been saying this for more than a decade, but it still hasn’t happened; there are still zero restrictions about what you can and can’t install on macOS.