By definition lurkers don't do any of that. A lurker literally just looks at stuff

That user you described is still a contributor, you could perhaps call them a curator or something but they aren't a lurker.

That's incredibly silly. Are they seriously not interested in gaining the huge influx of reddugees (still workshopping that one), this is the moment for Lemmy to gather a critical mass that has the possibility of attracting a large scale migration to the open distributed platform over the next couple years.