For right now I don't think it would be fair to say one way or another. Most of the communities are pretty generalist because there's not a ton of users so you'll get alot of different opinions on just about any topic. It's going to be awhile before Lemmy has a dedicated Nintendo community or any specific hobbiest groups for that matter.
Personally I'm mostly neutral on nintendo, I dont care for many of their games myself(except for some of the casual party games) but my sister is a big fan so I'm able to appreciate them through her. I'm sure many others probably feel similarly.