With a whole full week here, I am starting to feel it depends on the community and it’s composition. It’s not LemmyNSFW specific if that makes sense. Some folks will go out of their way to upvote every post, some will do the same with downvotes on anything that triggers them, others will simply skip on to the next post and do nothing. All 3 are perfectly fine IMO.
But it’s a contrast with Reddit where I’ve spent a few years. Reddit NSFW communities tend to drown amateur/ sub-wow content by ignoring that content (gut feeling, I’ve no hard analytics to back that up) and upvote produced stuff. The exception is on very specific kink /r’s