Yep, go to Comicvine or other battleforums, hell, any forum and you can see how toxic they can be. I don't recall Narutards being chill. Heck, they probably didn't even interact with actual Narutards if people trynna tell me they're chill.
But tbh, OPtards are also quite toxic, it has just gotten worse since Narutards also joined but there were always those delusional fans, ie believing G2 Luffy stomps Goku or something like that. Or believing OP is the best literature. Some of them were also toxic.
Btw, didn't Oda receive death threats from the LGBTQ+ community for confirming that Yamato is female indeed?