Via Stuart Ritchie:
Opinions on the validity of g seem to mostly correlate with your position on the economic part of left-right spectrum. This explains why academia is so allergic towards it, while the otherwise SJW-wy but libertarian-heavy, autistic, and high-IQ rationalist/futurist crowd takes such an unexpectedly close interest in it.
Fun fact: Eurasianists are left-libertarians according to this chart. This makes sense, since Eurasianism was basically invented by Tsarist Orientalist multiculturalists.