Did Robb really say all those horrible things about disabled people on facebook? If so, can I see those posts?

Sorry for not being here for so long, I would like to be named MBofficial as it aligns with my Youtube and Vine accounts

So I made this account back in 2012 when I was a brony, as you could see by my name. But I have since grown out of this phase and am stuck with a username incorrectly representing my account and current lifestyle. Is there any way to change this so I could have an appropriately represestitive userna...