Sheezus.
It's not that it's hard to do.
The divider is completely unnecessary!
I'm not going out of my way to do anything. I'm just doing everything everyone else is, except using the divider, and somehow, magically, everything works out perfectly fine.
Just try it out. You'll see just how silly the whole procedure really is.
Get some food.
Get in line.
Wait a few seconds after the person's stuff in front of you moves toward the cashier.
Put your stuff on the conveyor belt.
Pay for your food.
What's so crazy about this?