[adrianmalacoda]

There's something to be said for having a known good source of software that you can trust. GNU/Linux of course follows the same model, where you're expected to get the majority of your software from the distro repository. So, I don't think this model is inherently antithetical to free software.

I'm a free software nerd and I run LineageOS-sans-Google on my mobile device. I get the vast majority of my software through F-Droid, which works like a GNU/Linux distribution - they build all packages from source and sign with their own key. Only time I would sideload a package is if it's not available in F-Droid (because it's proprietary - although I've since found out about Yalp and use that instead) or if I'm building it myself. It works well enough for me.

I think the objectionable part of a walled garden, at least to a free software nerd, is the walled part. I appreciate the option of being able to step outside if I feel I need to.