I've watched Patrick's videos for enough years that I know he is not, but I still wonder from time to time. His voice is incredibly flat and uniform, he always uses fake backgrounds and there is extremely high use of jump cuts in his edits.
I suspect that he at least uses AI for scripts. He tends to repeat the same thing worded slightly differently a few times.
The jump cuts have been there since almost the beginning.
The community noticed he rarely blinks and he ran with the gag and edited all of them out.