People should not expect a seamless experience across totallly different communities of people. Reddit is not a seamless experience. Rules and norms are different across subs.
The internet works better with fragmentation. It always has. Trying to treat everything as homogenous is stifling.
This is cool. I hope it gets support from instances.
But also, these projects just slap a bulletain board costume on Lemmy and Piefed. Which is great -- I was reallly disappointed that LemmyBB seemed to die -- but there are forum-first options out there, too. Discourse has an AP plugin, and I think that's actively maintained. More interesting to me, though, is nodeBB.
Seriously, people should check out nodeBB. It's super cool.