Thank you for thinking.
I wouldn't worry about the 'dihydrogen monoxide' straw man, or is it appeal to ridicule? This guy has accused me by using every fallacy there is to brush off the most logical of arguments with no valid argument himself. I usually get called a 'flat Earther' or tinfoil hatter'. These guys have no arguments, and immediately resort to all the fallacies in the book, and some besides.
Ad hominem is usually their favorite.
Followed.