No, people just make claims of “noise” affecting the resolution of their “high-end” gear.
I made a -120dBFS 1 kHz 50% square wave test track to test out my system after a (now suspended) user claimed my poor quality streamer (RPi4B running RoPieee) was compromising my DAC output and polluting it with noise. I can pull the test tone into audibility. So far, no one else who has tried it has been able to.
My system has a lot of very clean gain, exceptionally low noise and very low distortion. I have standard, enterprise grade network gear, with steel chassis (which BTW are better at minimising RFI than aluminium), bog standard Cat6 U/UTP cables, no fancy tweaks. The stuff banded around about noise from PSUs, ethernet etc. is nonsense. Pure audiophilia nervosa.
Knock yourself out.