rob, I strongly dispute you asserting the right to disagree with the Rema — on any matter the Rema chose to comment on. Now, if you quote a contemporary of the Rema (i.e. a Rishon) who disagrees, that would be a different point. But you seemingly are not doing so.
But even putting that aside, certainly you must agree that just as you feel it is legitimate for you to disagree with the Rema and boldly declare “he too may be mistaken”, surely you must accept and respect others who do accept the Rema’s (and other Rishonim’s etc.) declared statement that Chazal are accepted as infallible on scientific matters. Assuredly you accord him (and those of us with him) at least that much respect that you don’t deny the legitimacy of his position.