For sure, support isn’t always complete and the Masto API is doing a lot of heavy lifting. I think that Fedilab really wants to be a Fediverse app though. I’m pretty sure their development has slowed a lot in the last year too because their dev has had some health issues. Although it’s “tom79,” not Dansup (who makes Pixelfed and a million other things).

I don’t think it supports Pixelfed-exclusive features either. I don’t think there’s even an app that supports stories right now - even the official one.