Maybe I am crazy but I don't really think it sounds that much like him. It's a little similar but different. It's slightly higher pitch, more nasal, and the intonation is a little different.
Question is: who is to say how much is needed before it escapes likeness theft? The king of generic nerd voices is going to claim excessive likeness and the accused lifter isn't going to reveal his whole process. Also tuning AI voices by ear is surely possible soon so category kings are not saved by demanding to be left out of training. A ministry of voice authority sounds bleak.
You are crazy.
It's really shitty that they ripped off his voice using AI. In addition, I dislike the trend of using text-to-speech for YouTube videos in general.