It is absolutely crazy. Anyone in their right mind would do their best to keep RF away from their domestic mains circuit let alone inject it deliberately.
The buck doesn't stop at these PLT adapters though. Cheapo Computer PSUs and some so-called "premium" ones indiscriminately radiate noise from LF all the way up to VHF. The PSU in this PC wasn't cheap but it renders 6m unusable and raises the noise floor 2 s points on 2m and levels spot frequencies all the way down to LF. The radio gear and Computers are even on separate, conditioned mains circuits.
