Well, the Gunt didn't mock the person, neither did he mock the victim to be exact.
What happened was he let the leash on Rand loose, Rand went full sperg mode as one would expect, repeating the word nigger over and over. The fight went onto twitter, and Ralph gave out the information about Rand's wife's miscarriage. Original tweet is up there, but it's something like "I have recordings where you were whining about your wife's miscarriage", and very low move.
Apparently after, Rand and Ralph are good again, the episode was caused by Rand's alcoholism. It's not like Rand treats his wife well either at least from what we have seen. He yelled at his wife during one of his streams that got yanked for nigger shit. If he does it on stream, I'm sure he yells at his wife all the time.
Either way, it was low and gay, and I think Rand does deserve an apology. Ralph and Co also did make fun of Sargon's dead baby, but that's with a far better reason. Still low but Sargon deserved it IMO.