I think a lot of people these days fascinated by the whole 432 Hz tuning thing (at least those who practise music more intensively and don’t necessarily buy into all the conspiracies and more esoteric meanings) I meet are also fascinated by alternative intonations / temperaments (other than 12-TET) in general. Not necessarily due to believing any folklore associated with the particular tuning, but just for the sake of experimentation and out of general interest.
I’m still not sure based on what I read, whether LaRouche suggested a particular scale or intonation to be used, other than the A = 432 tuning.
(For anyone reading my previous reply - I’ll correct it here, as I remembered it completely wrong from the top of my head: the 432 Hz was never a widely-used concert pitch, rather it was something suggested by Verdi and some number of others at various points in history, that never really caught on with orchestras - who were mostly tuning lower than the current concert pitch standard, but not to that particular pitch…)