Alright so i'm going to give a quick summary of the drama and what happened, i'll correct this if any is false. I'll make this as unbiased as possible.
Very fast summary: leafy was mean, h3h3 called him out, leafy said sorry, pyro called h3h3 out, h3h3 responded and defended.
Actual summary:
Convenient > arrows for extra memes.
So i kept that unbiased, here's my opinion.
Leafy is fucked up, and so is his fanbase. He took H3H3's words COMPLETELY out of context, and made Pyro think that H3H3 was talking shit on him. I was a fan for Leafy for like a week, and then realized his content is pretty much the same. Find someone cringy, call them a pinecone and talk shit on them, basically saying the same stuff. It was entertaining for like a week but got old fast. Anytime someone tried to saying something knowledgeable on his channel, it was quickly met with "kys" by a ton of 12 year old fanboys.
I also think this is just some big drama thing to create more views. Everyone loves drama, and with even Pewdiepie making comments on it, a lot of traffic is gonna go to those users.
EDIT: Also I think NFKRZ made a video saying that Leafy did in fact know the guy was autistic. I'll try to find it. Wasn't said by him, nor was it solid evidence. Video is here https://www.youtube.com/watch?v=POmYSuhg4Kw#t=3m23s