Not that I have anything against stackexchange (yet), but it seems like the perfect example of a site that could be set up in the fediverse. Different stackexchange-networks could be set up as different instances. Seems too obvious of an idea that nobody has done it yet
Someone tried to run a Lemmy instance for that purpose, unfortunately it wasnt successful (and I cant remember the name). Anyway it should work fine with some design adjustments.
I think you’d need a different frontend than Lemmy for that
Agree, actually I think that the Stack Exchange general journey is indeed perfect.