Keep in mind that Josh does often say "x wont happen" only to implement "x" a short time later.
He would be better off saying something along the lines of "x is not planned, however thank you for making the effort in providing this feedback, I will place x in the ideas bucket for consideration"
Bluntly rejecting community feedback will only lead to getting his financial supporters off-side and scare away potential buyers.
Embracing feedback and maintaining control of a project are not mutually exclusive, just requires some finesse.
Anyway, for better or worse, it is up to him how he runs things. I hope this feedback is received in the spirit it was intended.