It's not an effect, it's a technique. Massive difference.
Any technique on any instrument sounds obnoxious if it's used in the wrong situation. Conflating bad musicians playing badly with the general use of a particular technique is a pretty limiting viewpoint, in my opinion. And I've heard plenty of people complain about unsubtle fingerstyle.
I think people get defensive because topics like this pop up all the time, and the reasons most people give for disliking thumping/plucking are no deeper than them having heard Higher Ground played loudly in a guitar shop somewhere.
Techniques don't produce effects? News to me. Every technique (fingerstyle, picking, thumping, popping, etc) produces a different effect. The attack of a slap/pop note produces a very distinct effect that is much bolder than the vast majority of picking and fingerstyle techniques. "I've heard many people complain about unsubtle fingerstyle." I seriously doubt it applies in the same way we're discussing slap here.
The cooking analogy above was a great one.
This appears to the type of pissing contest where people deny basic logic in order to defend a side, while assuming everyone on the other side 100% hates what they're defending. You guys can have at it. Someone calling something "overused" doesn't mean they want it outlawed.
