In my opinion, the worst fandom/hatedom out there is the Pokémon Sword/Shield Hatedom. According to
Toxic Fandoms & Hatedoms Wiki, there are 73 reasons why they are considered toxic, but some of these reasons are more interesting. The best reasons proving this point:
1. They felt no remorse that one of the employees of Game Freak was diagnosed with COVID-19 and wished that everyone at Game Freak got COVID. Because of the timing of the incident, this is no different to wishing that someone got sent to Auschwitz during the Holocaust. And this is all because not all Pokémon are available in Sword and Shield.
2. They claimed that their harassment towards Game Freak is simply “criticism”, but when they’re called out for their poor behavior, they feel threatened and silenced.
3. They called everyone who purchased the game “fake fans” and blamed them for the decline in quality since the game sold very well.
4. They vandalized Pokémon Sword/Shield’s Wikipedia page several times.
5. They force their opinions on others, which includes namecalling, but they couldn’t take criticism.
Not even an average Pokémon Sword/Shield hater would do all of what I listed above. It’s the hatedom that’s so poisonous. The Toxic Fandoms Wiki even stated that there are more reasons why the Pokémon Sword/Shield hatedom is bad than any other fandom or hatedom is bad. And I agree with Reason #73 on that page.