It's the exact opposite.
Sometimes I make fun of Zoro and some people want to kick me off temple lmao.
I didn't know we had to worship Zoro like some divine entity to post there.
You can be a fan of a certain character and still make fun of that character at the same time.
But for some reason, some people think you have to worship that character, and the moment you do make fun of that character, you are automatically a fake fan.
I've seen some Zoro and Sanji fans being called fake fans just because they made jokes about Zoro and Sanji.