Front-end Web Dev., and some other stuff too
The turning point will be when companies/websites start spinning up their own Lemmy instances as their official one to replace their forums, which I think will happen.
I don’t know if this is going to happen, and to be honest I hope it doesn’t. Lemmy is not designed to be a forum and shouldn’t try to be used as a replacement for one.
Lemmy is a link aggregator. Yes it can serve a lot of (if not all) the functions of a forum but it’s not designed to be a drop-in replacement for something like Discuss or phpBB. It’s different enough that I feel like calling it a forum is not the right term.