The reason I'm asking is because I've noticed questions getting protected within very short time-frames, sometimes just days.
Take this code golf question for example, asked just two days ago:
I've noticed this elsewhere too, but I'm citing this one because I've been refreshing that thread and I haven't seen spam appear there. Granted, I might have missed it because it was removed too quickly, but it's clear it wasn't a big spam magnet.
I think it's problematic to close questions that quickly. Between the time before people discover the question and the opportunity and time they need to answer, two days is too short by a far stretch (this applies more generally, I'm not specifically talking about code golf here). I think we're missing out because of this and depending on what the exact reasons for protection are in cases like this (the stated one is too generic), we may need to revise our standards.
Because two days is too short.