I have one. I have no idea how popular or unpopular it is however, but please know it's only my thoughts.
There was a bit of a long time ago where a reporter had written something about Vocaloid incorrectly, or negatively. I can't remember. Fans were upset. This reporter started blocking Vocaloid-related accounts on Twitter, and the fans decided to make it a game to annoy her so they would get blocked.
Now, I don't know the full story. I could be remembering some parts wrong, and it's quite possible a fan did try to reason with her peacefully about her report.
Nevertheless, the fans making a game out of being blocked by a reporter just seemed like an unecessary rude act to me. I get it, her report seemed to have been faulty, but those actions hurt the reputation of the Vocaloid fandom. Instead of respectively letting things slide, or respecting her report despite what it was, they chose to be rude.
It completely burned the bridge of any chance of her changing her mind or wanting to join the community.
I was more mad at the fans than I was at her. To me, it was a childish thing to do. Even if something troubles you about someone doesn't mean you need to be a bother back.
Please know these are only my thoughts, and I may be missing some information. Regardless, when things like this happen in the fandom, it honestly troubles me, and I may even feel embarassed to say I'm a part of it.