Her point is a lot like mine below. If bro-science rules the day, then we all rue that day. And unfortunately, bro-science rules much of cannabis cultivation. Are you suggesting there *aren't* 'idiots' growing weed and doing stupid stuff? If so, I'll debate that point.
I posted a thread here years ago, lost during the site server switch & transition, discussing the main issue with E20 (because while I could find problems with other ingredients, the myclobutanil itself wasn't), which is very specifically that it causes resistance in fungi, and can do so with a quickness. Add to that the fact that *many* growers don't buy properly labeled E20, let alone apply it properly (if you've been here a while, you've seen all the threads I have asking how much of a product to apply, as though they either have no label or can't read it) and we've got resistant fungi. And the kicker is, it's noted in the label/white papers BY the manufacturer themselves!