Quick connect LP fitting won't work with standard gas grill?

I think I am just going to save my money and carry a small tank like I always have just for the grill and firepit. Makes me wonder though, since most of the grills out there require high pressure, why would manufacturers opt to put the quick connect after the regulator? Then you are either forced to buy a low pressure grill or spend a bunch of money to make it work with standard ones. Is it a liability to have a high pressure quick disconnect?