I totally believe that someone in uniform might get extra nice treatment, but aside from that, I'm surprised you could type something like that without it feeling like waving a big red flag at yourself. If I find myself thinking stuff like that (and I do, all the time, because I'm old and unattractive and can have quite the RBF if I'm not paying attention), it's almost always because my expectations are way off and I'm feeling insecure and paranoid, or I'm feeling insecure and impatient and grumpy and am projecting, or (most likely) I'm the problem. I always remember the old saying about how if some days it seems like every single person I bump into is an asshole, I'm the asshole, and I usually am.
Everybody who works retail wants nothing more than to get customers in/happy/out ASAP, nobody in a busy electronics store cares about only helping attractive people. They want to help those people get out of the store ASAP too. For example, even if there's some questionably hygienic, angry looking morbidly obese fiftysomething guy in a MAGA hat and Crocs standing in the corner glaring at everyone, they're still going to want that person happy and out of the store ASAP, just like everyone else. Maybe even more happy and more out of the store than most if he's creeping out other people. Not helping people who need help just gives them a bad experience and keeps them lurking around the store getting progressively angrier. Nobody wants that.