The completely uninvolved individuals I have shown this to don't seem to agree with you about how it "looks from the outside", so I really think your interpretation of things is just a you problem at this point.
They were confused as the same person for so long because no one provided concrete proof that they were not until very, very recently. At first, it was just me fighting largely on my own, and I wasn't about to put myself at risk by going into a plagarist's discord server who has a reputation for lording her power over people and being cruel to them. Yomi only responded when the stress got to be too much for her and she felt she had to say something, and eventually it got so bad that she literally left this website.
But I think you mistake something very important in this situation:
This was never about just mean comments on someone's fanfic.
This was about someone stalking a person across platforms, making multiple accounts, and attempting to doxx them. It was about active ableism, homophobia, and racism. It was about plagarism, attempts at libel, and anonymous hate as someone attempted to sew seeds of discord in fandom.
This was not just petty drama.
I stepped in because someone was being stalked and confronted directly. I stepped in because the cost has become more than just opinion about fictional characters, but someone's mental health.
Whatever you think about the plagiarism and block-evading, you ARE wrong if your opinion is not ardently against them both. Widemushroom DID plagiarize from salty-neo ... AND from YGP. Both DO block evade and spread rumors and libel frequently.
You are quite free to think that we should have handled trying to figure out whether or not they were the same person differently. I also have regrets about how that was handled, myself, but I also have a real life and go to school full time so I couldn't really prioritize this bullshit completely. I could only do what I could to be there for my friend, who I was standing up for more or less completely on my own for literal months.
Calling someone talentless and an attention-seeker isn't a crime, nor do victims of serial bullying have an obligation to be polite and kind to their direct abusers. YGP and Widemushroom do lack talent or they would not have to resort to LLMs and content stealing to produce their ideas, and they both ARE attention seekers who are upset when the world does not revolve around them.
I was recently asked by one of them to explain my rape in detail, including how many times I had been raped. This is not unique, as both of them have been much crueler to me multiple times than I have EVER, **ever** been to them. If you can't see which side is worse here and are upset that one of us uses a few rude words to describe the people who have been treating us cruelly, you should really re-examine your stance and whether or not you are actually interpreting the situation correctly.