I took the question in the spirit it was asked
but I also think subjectivist/objectivists labels are a bit daft and misleading .
So yes I have been believing in all kinds of nonsense in the past and owned magical cables that I ofcourse could differentiate etc.
Now I believe in science and it’s derivative engineering.
But there is still work do to do in transducers and psychoacoustics , there are unknowns but they are not esoteric and mysterious, it’s just that no one bothered to figure it out yet or shared in a scientific way to be explored by others.
I do think Kef and Revel , Genelec et al are on to something they only tells us part of the story? Audi science is currently a bit like alchemy was in the past , no one is sharing knowledge and everything is protected as a trade secret.
An notable exception is dr Tooles body of work , some of it was done by financial support Canada but also when he worked for Harman results where shared and every one benefited from it . I’m sure there are more people to thank for this but I don’t know names . So directivity is now a thing that many speaker manufacturers explore for example .
There is probably more like this worked out by some
Electronics I believe is done practically for our hearing abilities . Designing nice products is an ever changing competitive thing even if the sound part is solved.