They aren't, why are you so stubborn? A USB stick miner is nothing more that a toy at best (eg Moonlander)
and a scam at worst. Claiming to be RandomX ASIC is pure scam. A RandomX ASIC is called a CPU.
I'm wondering if they're some kind of CPU on a stick
while I'd certainly seen USB miners like the Moonlander and Gridseed, the ones in these videos looked like they were mining Monero.
So you're not telling me anything new. Your opinion is duly noted, so please don't keep ranting about whatever it is these things are if you don't know exactly what they are, because that's what I'm trying to find out. Naim027 is looking into it, so we'll see what he comes up with. You might be absolutely right, but you're not adding anything to this thread.