Unless you are very sure that McAfee was "clearly unhinged individual", it is a strong statement and ad hominem. Doesn't help add to the discussion than mere gossip.
The man said he would eat his own dick on TV[1] if Bitcoin didn't hit $500k in 2020. There are credible reports he paid women to shit in his mouth from a hammock. There is his entire twitter feed. I am very sure McAfee was a "clearly unhinged individual", and if you're not I'd like to know what kind of evidence you need.
We don't have to go any further than the tweet that started this thread: McAfee claimed to be "getting subtle messages" from officials in the American government threatening to kill him.