Interesting. Any RF FETs (MOSFETs, GaAs, InP, etc.) I have seen had 1/f corners well above the audio band so were noisy. That said, I have not looked at a MC or MM phono pre design in ages.
And no, didn't see that show, sorry.
I liked tubes for their extremely high voltage overload point, less so for their noise in a MC stage. Good ones were fine, but hard to find. I used regulated filament and B+ supplies to reduce noise and keep them more stable. I tried current sources/sinks to fix biasing but they added noise. Nuvistors did OK, but most of mine used 12AX7/ECC83 just like everybody else because they were widely available and fairly cheap (back then). 6DJ8's seemed to have less noise but I've long since lost my old tube manual (buried in the black hole of old audio files in the basement or out in the shed).