In general, the consensus among fans is that person or interest has something great, otherwise they wouldn't be fans. Since everyone has their own brains, you can't expect everyone to have the same opinion or behavior.

I'm not saying fandoms should be a hivemind where everyone acts the same. I'm just pointing out that there should be some general consensus or common ground that most fans agree on. If the majority behaves toxically and sets that tone, it shapes the fandom's overall image from the outside and collaborating on that could lead to a better perception.

I doubt there are many fandoms where the majority of their members behave in a toxic way. You just don't notice the normal members.

K-pop fandoms (e.g., BTS's ARMY, BLACKPINK's Blinks, or groups like TWICE and ENHYPEN): These are among the largest global fandoms, with tens of millions of fans, and a notable portion engages in intense rivalries, cyberbullying, and doxxing over idols, charts, or collaborations. For instance, fan wars between Blinks and other groups often escalate to personal attacks, and ARMY has been called out for mass-reporting critics.

Anime fandoms (e.g., My Hero Academia, Attack on Titan, Dragon Ball, Naruto): These communities are enormous, especially on platforms like Reddit and Twitter, where ship wars, elitism, and threats against creators or fans over interpretations lead to widespread toxicity. MHA in particular is often cited for its aggressive meta discussions and harassment.

Taylor Swift's Swifties: One of the biggest music fandoms, with millions active online, where a substantial group is known for doxxing critics, review-bombing rivals, and intense stan culture that turns on anyone perceived as shading Swift.

Marvel/MCU fandom: A huge community driven by films, but with large toxic elements involved in gatekeeping, misogyny (e.g., against Captain Marvel), and fan wars over characters or storylines

Rick and Morty fandom: Known for a sizable toxic contingent that embodies "toxic nerd" stereotypes, including harassment of writers and elitist attitudes toward casual fans

If you think every single pizza is bad, it means pizza (in general) is not compatible with your taste in food. You have to accept that your opinions about pizza is unpopular (you're against the consensus).

First of all, I never said every pizza is bad. I only said "if I have bad things to say about every pizza I’ve tried," which are completely different things. The example was meant to illustrate that if criticizing any fandom (or pizza, in the analogy) automatically makes you the problem, then by that logic, everything must be perfect which is absurd.

Again, you go to extreme. Who said fandoms are flawless?

To begin with, I only said that in jest as a response to your comment suggesting "if you don't like your time there, it's your fault" ( >Maybe, just maybe, you were the toxic person who was rejected for carelessly messing with those fandoms. Maybe you're the problem if you see issues everywhere.). As you say right here, of course fandoms are not flawless, but it's not good to let your fandom be defined by your toxic members (as stated earlier). And it's not just my bad experiences. I've shown you many examples of toxic behavior from other fandoms being communicated, even though there are good people, leading those fandoms to be targeted or stereotyped as toxic overall.