The several apps thing I don't see as much of a barrier to Redditors; most are already used to the platform's official app being garbagepuke and going with something else so they'll figure that out relatively quickly.

I haven't yet seen the "Pick an instance to sign up with. It doesn't matter, well actually it does, for reasons we're not explaining right now" problem really addressed in a meaningful way. Those lists of instances to join when you go to Lemmy or pixelfed or whoever's website? Most of them don't get filled out correctly by instance admins; so they're either the default boiler plate, or they're the first two-thirds of the first sentence of a paragraph about what Lemmy is.

Lemmy.world

Lemmy is an open source, federated link aggregator platform powered by ActivityPub, the fastest growing...