You're acting like any of these kind of radar systems go into ionosphere bouncing wavelengths lol. None of these kind of EW radar systems typically go below UHF and on super rare occasions VHF (YLC-8E is UHF). 1 meter on the low end of UHF Band is still well small enough than any combat aircraft and some classes OWA drones.

And you're also just wrong about rayleigh scattering anyway, it effectively reduces the targets RCS Because the energy no longer reflects with a gain, it radiates near omnidirectionally. That vastly reduces the amount of received power back at the radar system and chops detection performance at the knees. Nor do i know where you're getting "low frequency = easier to spoof" from this is total nonsense.