> the intended experience is that you get apps from the play/app store

Once again, this is the point.

> it doesn't imply you oppose the freedom to run whatever code you want

But it does.

Let's first look at what's good about "intended experience" & possible legitimate reasons to have a differentiation between "vendor-approved" 3rd-party apps & non-"vendor-approved" 3rd-party apps.

The connotation of an "intended experience" is that the experience is supported by the OS vendor. If you have issues with your experience, these are issues that can be reported & the OS vendor will endeavor to fix. Leaving aside the fact that Google has no user support to speak of, even if they did, this isn't something they would every offer for 3rd-party Play Store apps regardless. So 3rd-party Play Store apps are not doing anything for users to provide them with an "intended experience" that isn't equally available sideloading.

The only other legitimate reason to have a differentiation would be to ensure the user doesn't install malware. Play Protect currently does this with sideloaded apps, so once again there is no difference in the "intended experience" from the user's perspective.

If there are no legitimate reasons to differentiate the experiences, the only reasonable conclusion remaining is that they're differentiates to dissuade user freedom.

>Let's first look at what's good about "intended experience" & possible legitimate reasons to have a differentiation between "vendor-approved" 3rd-party apps & non-"vendor-approved" 3rd-party apps.

It's pretty obvious that they think the distinction is worth having because they can vet apps they signed, rather than random apks from the internet. You might think that's a flimsy justification, but that's not a reason to reject such a distinction exists at all.

>The only other legitimate reason to have a differentiation would be to ensure the user doesn't install malware. Play Protect currently does this with sideloaded apps, so once again there is no difference in the "intended experience" from the user's perspective.

That's purely reactive (you can't scan for stuff that you don't know about), and doesn't ensure identity validation. Again, you can argue how good those reasons are, but there's at least a plausible justification for it.

>The connotation of an "intended experience" is that the experience is supported by the OS vendor. If you have issues with your experience, these are issues that can be reported & the OS vendor will endeavor to fix.

When was the last time anyone got "support" for Android/iOS from Google/Apple? At best you have random forums that google/apple staff check once in a blue moon, if you're lucky.

> It's pretty obvious that they think the distinction is worth having because they can vet apps they signed

This is an assumption made in exceptionally generous good faith. It's certainly possible, but I would argue this is far from obvious, & there's enough circumstantial evidence to support this being completely untrue.

Sure, Google can vet apps they sign. Whether having this ability is their primary motivation for having a distinction (or whether they will actually vet apps they sign) is a very different question.