I've used the YouLoop with my (modified) Airspy HF+. It's not a magical antenna, but it does work surprisingly well. I suspect most of the performance in this handy little antenna is due to the balanced nature of this loop and the binocular transformer that is used to isolate the antenna from the receiver and all of the computer noise associated with it.
I have seen similar isolation performance with a carefully amplified, shortened vertical antenna. (I used an AMRAD active antenna some years ago with a low noise, high dynamic range CP-666 JFET and a very carefully decoupled power supply and Bias T)
These days, FCC Part 15 is a sick joke. There is way too much RF junk being radiated from too many things that nobody tests for compliance. So the solution is to get away from it all. Isolate the antenna from the house, decouple it from your radio and your household environment, and hope that no egregiously strong RF sources are anywhere near you. The YouLoop does a pretty decent job of doing that. Try taking one to a park and see what it does.