Why are Jinjer fans attacking Babymetal ?

Since the announcement, I've seen many triggered Jinjer fans attacking Babymetal and calling them ridiculous things.

I understand that they're upset their band isn't in the spotlight, but come on—how is that Babymetal's fault for being more popular?

I love jinjer and their style but their fans needs to calm down , why hate when we can celebrate two amazing band coming together ?