You could be of the opinion that I am a dog in real life.
You would be objectively wrong because I have stated many times in the past that I am a cat in real life.
You may like dogs, you may love dogs, and imagining me as a dog may increase your opinion of me. But I am a cat and I hate dogs and it is insulting to be called a dog.
I have no way of stopping you from calling me a dog beyond letting you know that it's not cool to call cats dogs.
That's an absurd scenario I felt like sharing but if you don't understand how an opinion can be insulting regardless of intent then I think you can at least understand the concept of respecting his wish not to be called an edgelord in public. You are prioritizing your opinion over his comfort and that's not nice.
If you choose to be insulted that easily that's your problem, it's the internet, get over it.
Not to mention it was a clear joke about a character, if you get insulted on behalf of a character you've put way too much ego into that character.
If someone called Liu fat, or laughed that he was a Kung Fu Panda ripoff, I wouldn't cry about it. They have a point. Ghost Rider is a campy edgelord, this electricity guy seems like a campy edgelord. Maybe he has more depth, all he's done so far is walk into a bar and rob someone straight away, which makes him more belligerent than edgy, which is why I joked that he hadn't sat in the corner for hours first. But as a character archetype, he's literally the definition of edgy. Cold aloof personality disorder, eats souls, has the power of hell? How is this even an argument?
Hell, loads of my characters are edgy, it's a common trope. It's not an immediate insult that your character lacks depth. In fact, it -makes sense- for Arena characters to be edgy, I'd be more bothered by joyful or optimistic people in Arena, considering Arena character's main purpose in life is fighting and killing people.
Stop taking everything so seriously, or we'll never get anywhere. Me and LeeRoy like to joke around and if you can't handle jokes then you definitely can't handle a fight with us. Not a damn chance.