[Rich]

I've never seen someone be wrong and double down the way you do.

I'm amazed actually. I've taught all-but-one many times and it's clear that the phrase has to do with basic spots and does apply to defensive fouls as well.

In college rules, it's referred to as 3-and-1. The 3 are offensive fouls beyond the basic spot, defensive fouls beyond the basic spot, and defensive fouls behind the basic spot. The one is offensive fouls behind the basic spot. The 3 have basic spot enforcement. The 1 is enforced from the spot of the foul.