I'm sorry, since when did the size of a fandom's population become a negative attribute? Now your post appears to be resorting to blanket mudslinging of an entire group because they disagree with your belief in how this film and ending should have panned out. Whether it's nonsensical to you, me, or anyone else here is irrelevant to them. Sure, a number of their group do present some lacklustre reasons to support it, but I'm not going to generalise everyone and say that there aren't a few good fans who can create arguments to justify their opinion.
Okay, insert your logic here:
1. This movie isn't based on manga facts even more, it contradicts tons of it.
2. This movie is canon because author told that.
3. People love it, because their favorit character that got nothing to do with main story of manga became relevant and even MAIN character in this movie.
4. People that wasn't intresting in this character or her love - doesn't have anythnig to watch in this movie, because all characters where sidelined for this minor character.
You could argue about "justify" or not, but "justifying" it means that it wasn't right to begin with. And again, why do you trying to coun't numbers, if it's already being considered as succes by NH/SS fandoms that is based on money aspect and other parts of fandom that doesn't like ending would consider it as ultimate failure in tersm of story/logic/plot? Just simple answer, please.