I like Rourke, quite a bit. With that said, take his stats provided without a source with a heavy grain of salt.
What does a low snap mean for a QB?
If you have to bend down, you miss out on field depth-blitz breakdown. Think of going round a corner that says "35 mph" and in the middle of the turn, you look to your right for a split second and then re-focus your eyes forward. btw, you're going around this corner at 60mph. Not a good feeling is it?
A snap that does not go between the numbers does not necessarily mean it's a bad snap. If you don't have to take your focus off the receivers, it's not a bad snap.
On a WR screen, the snap absolutely needs to be spot on, same goes with any other pass route that the QB needs to catch and release instantly.
I didn't watch every single shotgun snap performance. I did watch some and I didn't see any that stuck out as 'omg bad snap!'.
We had several other issues that are far more concerning than the accuracy of the snap.