Agreed, and I'm one of them. However flagship devices have been neutered, and core (for many peoples lives) apps require significant compromise.

Whilst there are edge cases, the majority of Android users are effectively within a walled garden, which the opposite used to be one of its strongest appeals.

I'd still say it's not a walled garden, as long as you can install f-droid or the amazon app store. I can still access port, torrents, install a rel alt browser etc. It's a significantly less walled garden.