ayyy, blastweave good to see ya
as for Armsy: he gets hit with the fanon bat hard, in a lot of ways. In canon he's an exceeding competent leader, combatant, and strategist with years of experience under his belt. He's perhaps self-reliant to a fault, mirroring Taylor in how they trust themselves too much and others too little. He's egotistical and arrogant, convinced that he's important, that he's a hero. That he knows best, that it has to be him, and him alone, who can save them all.
And then he's branded a war criminal and the slaughterhouse nine nominate him as a member.
his sense of self is fully broken down and rebuilt as he hunts down the nine, and it's only through the power of the people who love him that he grows and becomes both a better person and a better hero- Defiant.
The fandom sees this (or doesn't, considering the depressing number of people who write fic without having ever so much as touched the source material) and decides to near-universally write him as an unfeeling rObOT who is completely social incapable without Dragon hanging around him, which she is nearly 24/7, and he never gets to accomplish anything of note so long as the SI- er, sorry, alt!Taylor is around.
Or, in the rare case where he is the main character, instead of giving us the overconfident, bold but brash man that he is, he tends to get woobified to the point of being unrecognizable and given so much artificial angst that just- why? Why do this when he's perfectly tragic in canon? I'm fine with people inventing backstories and trigger events that fit since iirc we don't get one for him in Worm itself but the amount people feel the need to change him when his character arc is already one of the best ones in the source text is just infuriating!
And honestly, at the end of the day- it's not so much people changing characters that bother me. If you want to take a new spin on a character through an AU or whatever- sure! Go nuts.
It's people who alter characters and then refuse to admit that they have altered them- or worse, insist that their versions are canon-compliant, since that just creates more misinformation and arguments in a fandom rife with both.
so yeah that's the deal with armsy in the worm fanfic fandom. either stale meme or unrecognizable shell.