I think there was some reasoning that this would be a long way off due to technical reasons, but still, until then.

Good note on the instances removing kbin communities (is this defederation?), my instance in Sync for Lemmy is showing the links you shared as a website and not a normal federated community.

Isn’t AC an oscillated DC?

Try Hermit on Android then. You’re looking for a PWA wrapper app that lets you add them to your homescreen. Then again, your Android web browser should already have this with the “Add to homescreen” feature.