They’re actually confirmed to be extra stage bosses in the upcoming Cuphead DLC: Don’t Fuck with the Wrong Fandom
Because this fandom is willing to cause terrorist bombing and potentially murder people. Yep, all the makings of a toxic and unlikable fandom (you're only proving me right if you down vote this post).
I wish people would stop with the ultimatum of "your disagreeing with me makes you as bad as I suspected you were to begin with!/the people I was criticizing in the first place!" Touhou is such a big fandom, there's just no way one can generalize about it, much less paint people who disagree with you as equally as bad as the worst actors.