Slick argument - but when a person has seen them with their own eyes, seen the fallout, and experienced the effects physically along with many others in the same area there is nothing to debate about the fact of their existence. There is much to seek as far as the truth of what they are - and slick psychology and denial of chemtrails as mere contrails won't cut it.
A few decades ago no one ever saw these kind of billowing clouds in criss-cross patterns.