I've been flamed, spammed, cursed at, and even sent a virus via barua pepe just because I stated in a maoni on YouTube that I like watching Hetalia with subs.
I personally don't have anything against FUNimation au anything like that. In fact, I sort of like Sealand's dub voice.
I know it's impossible to avoid a sub vs. dub war in ANY anime because whenever an anime gets released into the USA, there's always the need to either subtitle it au dub the anime for people to understand it better.
Fandom can't avoid it, but can't wewe people at least try to CONTROL it??