@ house of cards.
I don't have a problem with the fandom-hopping in itself because as you said, a person can be really into a number of things at any given time, but I do feel like fandom-hopping is one of those things that can go hand-in-hand with the whole "only-writing-what's-popular-to-get-readers" spill. It was something I noticed a lot waaaay back when I was really active in Journals: people would try to gauge which fandoms were more popular and tailor their writing accordingly.
I feel like what I've said about larger fandoms has gotten incredibly misconstrued in that I've in
no way implied that just because someone writes for a larger fandom, they're only doing so for the reads, but there is a chunk of people who
do latch onto a fandom only because they know it'll get them reads, and that's not who I want to become. I in no way, shape, or form think that my writing is the bee's knees just because I've always happened to write in an unpopular fandom: I just happen to like things irl that never became a phenomenon in online fic
Going back to my previous example with
Supernatural, I've written some Dean Winchester smut that's gotten a lot of reads and that I was crazy passionate about, but I'm not going to try to "tailor" my inspiration to what gets me more reads, if that makes any sense. I'm not going to be like, "Oh, when I write this, I get more reads, so I should just write this all the time!" because I wouldn't be as into it and my writing would suffer. If that were the case, I'd be an OF writer because that's the only thing I post that gains me any feedback anymore, but OF has just never really clicked with me. That's not saying that "all OF writers do it to get reads/feedback/whatever," but if
I were doing it, I wouldn't be passionate about it because all of my ideas come to me as fanfiction.