Q&A boards on reddit functioned thanks to flairs, [answered], [open], etc. Programming adds the value to also specifying a language in question. Lemmy devs promised they'd eventually impliment them. I see that change doesn't block one from creating specific communities (and I already asked questions and got answers on existing ones), but I see them bringing the closest experience to what I feel you want on Lemmy, without making a separate solution.
tbh all of the communities hosted on our instance should already be valid/viable alternatives:
in the sense that anyone can ask a question and potentially get answers from fellow fedi members
If we're missing something that Stack Overflow has that would make or break the experience,
definitely feel free to add them to this comment or the Sublinks Repo
But weโre missing an instance dedicated to that, a place people can port their S.O. answers to, and start building language or domain specific communities