It's all about the numbers. If I find a PG that can shoot the perimeter jumper, why wouldn't I recruit him to play SG? If he happens to have strong pass and BH ratings as well, hey, bonus points because now I can get quality minutes at PG for him too. I don't even look at listed positions any more. I recruit for players whose potentials will fit my need at one, preferably two, floor positions.
If that means I have an SF handling the rock at point, so be it. I think a lot of people are grabbing PG's because there are a good number of PG's that have good perimeter ratings as well as the core BH and Pass. They're grabbing C's because of the higher rebound/LP/Block numbers compared to the standard PF (personally, I like the added speed/athleticism that PF's have compared to the uber-low speed numbers found in C's post-update, but that's just me...)