I think people will only destroy your entertainment if you let them. I'm sorry to hear you've had such bad experiences, I'm sure we can all contest with the bad we have seen and the ugly that can come out of anything growing into popularity, especially something we love dearly. That's how I felt for some time when Breath of the Wild brought more people to the Zelda series (a franchise I love and adore with my entire being), but I didn't let that ruin the franchise for me. Instead of focusing on all the negatives, I would disengage yourself from all those negatives entirely, including this site if it makes you feel that way.Nope I don't chill on this subject. People are trying to destroy my entertainment like they have done to so many of my beloved past franchises. This is more than just a game for me.
I hate Youtubers and streamers, nothing worst than AC becoming popular. A community growing big is never a good thing.
Like Licorice said, It's best to limit yourself and focus on trading with friends and people who you know you can trust. That's what me and two different friend groups do and It's a lot of fun. People will only "destroy" your entertainment if you let that consume you. I hope you can find at least some small things that bring you joy in this community and game.