> it seems the correct muscle memory response [is something other than] never download and execute anything

Arrgh. You're looking at the closest thing to a root cause and you're just waving over it. The culture of "just paste this script" is the problem here. People trained not to do this (or, like me, old enough to be horrified about it and refuse on principle) aren't vulnerable. But you just... give up on that and instead view this as a problem with "muscle memory" about chat etiquette?

Good grief, folks. At best that's security theater.

FWIW, there's also a root-er cause about where this culture came from. And that's 100% down to Apple Computer's congenital hatred of open source and refusal to provide or even bless a secure package management system for their OS. People do this because there's no feasible alternative on a mac, and people love macs more than they love security it seems.