The web designers and developers are at the very least complicit. They are ultimately the ones typing in the code and hitting submit, so they at least must share the blame.
True, I'm just saying I don't think that's where the problems originate.
In my practice, I'll try a Jedi mind trick, e.g. "Trying to [state larger goal] makes a lot of sense. An even more effective way to do that is to [state alternate, non-toxic technique]."