Heard this discussed on Knowledge Fight but haven't seen the twitter space call myself. It's not something I particularly want to seek out. But with Knowledge Fight being a credible source, I don't doubt it.
Assuming they did in fact appear on the same space together while talking to and sometimes over each other: either the Muskrat previously put on an elaborate performance to give his sock puppet credibility, or his biggest stan sounds almost just like him.
I don't think it's out of the realm of possibility that one of his worshipers would go so far as to adopt his speech patterns and try to sound like him. Or it could be a sock puppet run by his brother or cousin.
Every possibility is extremely pathetic, and I'm curious to see what shakes out.