I was thinking something about this a few days ago too. When we polish a car we know what we are trying to accomplish. When a hack "polishes" something, I wonder what they are trying to accomplish. I'm pretty sure it's safe to say that everyone who sets out to do work on anything is expecting to get a better outcome than what they started with. So, why would someone take a fairly flawless car (new car, fresh from the factory) and hit it with 4 ply and 3M EC and consider it done? I could maybe see a rookie or whatever do one car, pull it into the sun and then go, ewwww, but why is this happening time after time though?!
A long, long time ago I used to get my car washed at a "detail" shop. I would always see someone with a buffer and wool hitting a car. At the time, I didn't give much thought to it other than, "maybe my car could use that." Looking back on it now, I just think... I wonder what that guy with he polisher was trying to do, or if he truly knew what he was doing by polishing.
Anyway, to the OP... Hacks don't like to finish down properly. I don't even think they know how to. Simple lack of education, imo. Using to aggressive of a combo will leave swirls, hazing, holo's, and trails.