Back out of OMNI territory and into the issue at hand:

Judging people as of lesser value because they don't make much money is a bad way to look at any issue, including this one. I don't know whether OP is the CEO of a Fortune 500 or a low-level working stiff. It doesn't matter to me.

I am glad that carriers / airport authorities contract with those folks (who generally make a good deal more than minimum wage if you take a look at the contracts). There are tons of people who think that they have Pre-Check and don't or think that they have access to "premium" security and don't.

Especially with Pre-Check, if those people aren't sorted out into the standard lines, they gum at the system when they get to TSO performing the Pre-Check scan. Even if booting someone out of Pre-Check only takes 30 seconds (argument, firm order, walk of shame), multiply that by 3-4 people and that means I'm waiting longer to clear the checkpoint.

It takes me about 2-3 seconds extra to show my BP electronic or paper. I slow down a bit, have it open and I've never found a "checker" doing anything other than looking for the Pre-Check symbol.

I've also found that if you spend 10 seconds thinking about why these folks are positioned where they are, you come to understand that they serve your interest, not TSA's.