Does federation have a bit of a learning curve? No doubt.
Is Lemmy buggy as heck? Absolutely.
But I don’t think that really justifies a lot of the comments I’m seeing in Reddit alternatives threads that it’s hard to figure out. The front page feed and sort options are very similar to Reddit. Searching for same-instance communities is not too difficult. Posting, commenting, and voting are all quite intuitive. What’s the problem?
A made-up word is easier to adjust to compared to the word that already has a different meaning in your mind, I think. Once your brain has filed something into memory it’s not very enthusiastic about changing it.