On more mature projects this is indeed the case. Lemmy only started federating a few years ago and is very much still in beta. We’ll get there eventually and it is already in the dev queue, but keep in mind that there are only two people working on the entire codebase full time. Don’t expect a Reddit level of fit and finish, but at the same time you also need not expect a Reddit level of corporate, shareholder-over-user antics.

Finally, since Lemmy is open source, if you really need a feature right now, then submit a pull request!