Yea the voice is somewhat strange but the information, though he applied it to all religions, really hits home when it comes to the indoctrination one receives as a jw.
That's because the chap behind theramin trees is an exjw and fully qualified psychologist with expertise in philosophy .
And no, his voice and presentation is neither creepy or strange but professional and entirely fitting considering the sinister subject matter.
I highly recommend his brother Qualia soup.