I do recommend switching through a large variety of fandoms in your lifetime. Sometimes fandoms can turn into fairly closed off communities, then the few popular creators set the tone and everyone else follows unquestioningly.
You could be in one fandom where the most popular ship has a large age gap. Within the fandom this is normal, in fics the character ages are changed to be a lot closer, since they are fictional anyway... and there's nothing wrong with it. In most cases it's not even that the character needs to change in any other way, but the original writers stated they are x age, and that simply doesn't make sense for them. You couldn't guess that's their canonical age neither by looks nor behaviour...
Then you switch to another fandom, and see people rip into someone who ships something with a much smaller age gap. If the popular content creators decided this is an awful ship for the age gap, that person is done for in the fandom. Even if it's something like, 24 and 28, you'd be sitting there watching the blogger's name get added to all sorts of lists.
You can join a fandom where everyone's extremely worried about consent. They make sure to clearly separate the character from the person who voiced them, and add disclaimers that they don't ship the actors only the characters, condemn rpf, and anyone who forgets to clarify might make the creators uncomfortable so they're immediately cancelled.
...Then the next moment, you switch to a fandom where the content creators openly flirt with each other in and out of character. Just fully dgaf. Grown men telling each other "I'll steal your boyfriend" but the other two aren't even boyfriends, just voice characters that have chemistry.
Then you blink twice and you're in a fandom where the artist is so confident that he's willing to kiss another guy for the lols (looking at Ryan Reynold and Andrew Garfield for example. Does it even count as spideypool? Who's to say)
Then you encounter an rpf fandom where the ship is straight up a selling point. Kpop, Thai bl shows... these are real people, but they make money off your obsession with their love lives, so they exaggerate on purpose. This kind of fandom would put members of the first one in a coma.
After seeing so many approaches to the same topics, it suddenly becomes less clear where the line "should" cross. This was taboo, but in this other fandom everyone does it... and I thought this was okay, but in the other fandom they highlight so many problematic aspects of it...
Then you realize, the moral guidelines you adopted simply because they were the most popular in that specific fandom may not be correct after all.
Eventually, you may break free... and grow your own moral compass, that isn't just whatever others around you agreed on.
