First guy summed it up pretty well. Personally, Im very particular about the groups I say I stan, because I dont want to seem dishonest when talking about other groups I borderline stan. I dont say I stan a group unless I listen to at least like 70% of their disco, buy their albums, and watch a decent amount of variety content. In that sense I only stan Bp, Twice, IVE, and BM. Otherwise I just say I casually follow the group. I know stanning can have a different meaning for everyone but I think having a clear line is important.
I have never liked the word "stan" and never use it myself. But I think most people mean "fan of multiple groups" when they use the term "multi"/"mulitstan".
This is also true. I don't like the word "STAN", but I keep using it, because I read it a lot!
Most of my faves are from the first 3 gen, so saying I'm a "stan" isn't really true, because 90% of them don't release too much content, BUT that doesn't mean I'm not a FAN of them anymore.
I mean, I LOVE FinKL and S.E.S, but they are not active anymore, but I always watch pretty much everything they do.
I'm a FAN of more than 50 Korean artists (including groups, soloists, and others), but out of these 50 artists I could name like 5 or 6 that actually release a LOT of contents regularly.
Since MAMAMOO, I don't think I'm really attached to anyone. Maybe Gidle, but that's all. This new generation is totally different in terms of content and showing their real selves or personalities.
I think, in this way, the 3rd gen was the peak. Now, Idols are really like Idols.