I know
"Looking at examples of these campaigns, it's difficult to see what admin in their right mind would fall for this kind of crud"
The ones where IT department has been "Let go" and replaced with Indian call centers, as mentioned on Reddit. When the finance lady had to take her monitor and keyboard to the server room to try and fix what the call centre was asking her to do over the phone. See left crying.
That's who'll get caught out. C level managers who think they don't need an IT team.