Not exactly.
"Shoe clerk" is more of an attitude/mentality more than a profession.
For example, the 1Lt aide to the 3-star General who waltzed into my squadron -- located in a combat zone and actively flying combat missions in support of coalition soldiers -- and on his own accord pulled this sign off the wall:
...because he felt it was offensive.
That dude was a shoe clerk.
And, I think the reality is that the "support warriors" outnumber the real warriors pretty significantly. So, nobody is being made second class unless they're hanging out in a flying squadron and trying to enforce shoe-clerk rules (see above). The reality of things is that pilots are the ones who are rapidly being made second class due to the massive "everyone is a warrior" entitlement mentality cancer that has taken hold in the USAF. Now, since "everyone is part of the fight", those who are actually physically PROSECUTING the fight can't get any real support from those people whose job it is to perform that support.
That's why we're doing our own travel orders, our own finance vouchers, organizing our own logistics for our deployment, fixing our own computer problems, etc.
So, aloft, right idea but wrong execution.