Do yourself a favor and stop arguing. Positive and negative is completely different from live and neutral. You’re confusing a floating circuit with mains AC.

I don’t see any mosfets here

there are no ac batteries by definiton

They just don’t know what they’re talking about. Mistook it for AC, where one usually wants the switch on the phase side.

Fun fact: Pierre did not suffer much, he died in a cart accident.

This image is redacted to protect potential victims