Is it that bad to say that something has mostly a bad fanbase? Does it automatically say that the show is bad? No. Does it mean you can't enjoy regardless of it being true or not? No. But it also certainly doesn't help selling it. Do we need to start talking about things like Naruto and Attack or Titan or at they special cases? Someone doesn't like a show? Don't get angry and don't feel so offended by it. Let it slide or actually try having a real conversation about it and not a meta one about "No, you just did not say that!" If you actually believe there was more to the anime than low quality threads then make some long post about its good points. Maybe no one will read and it will end right there or you will level up the discussion instead of degrading it even more.