I’m going to guess that’s because nobody got around to it
Not quite, i planned to make an advertising run on the forums and discord first, maybe reddit later.
The reason i didn't do it yet is that there are some features in the current version that are only half-baked (posting takes ages sometimes) or not working at all (purging communities and some moderation features).
I'd rather wait for the next major release (which might be soon: https://github.com/LemmyNet/lemmy/tags) and see if things are better there.
(if you think this approach is too slow just let me know 😉 )