Re: pickup legs length?
I dunno, the OP hasn't actually said it was helpful. You need the long legs in a batwing-pickguard SG, for example.
Even the Lt says he'd use them on a jazzbox, so it's acknowledged that there are uses. And it still doesn't answer the guy's question as to how long the two different lengths of legs are.
A while back I asked a technical q about flipping a magnet in a humbucker. Made the mistake of saying which two humbuckers I was using. Cue lots of alternative suggestions on which pickups to use, but no actual technical info that answered the question.
However, it's by no means unique to this forum. As you say, people want to help, so will often just say the first suggestion they can think of rather than not answer the question. It comes from a desire to be helpful, and that's a good thing.