Dude, we've had reasons to make cartoons of you LONG before you learned how to use the buttons.
...Because Curt is successful? Because he's talented? Because he's smart enough to turn it into a business?
He can't, and he probably doesn't. It just makes him look slightly better than admitting he's frothing at the mouth with rage.
Moreover, Mike probably doesn't even recognize that he's clearly jealous. He's spent so much time hammertyping into his keyboard that he's forgotten what it feels like to have a real accomplishment or ambition. When he sees someone else who has that, his brain just says "ME NO LIKE" and he spazzes out.
He was also crying about gaslighting and, judging by his fearfulness, needed his safe space. Honestly, Mike should forget about Stormfront and just embrace tumblr. They're used to dimwits who can't argue and just want to talk about their feelings. He'll fit right in.
