Their deity was whoever brought the show back (even if they dumbed it down and made it so conform to the trashy mainstream that it defeated the point of doing so), they all seemed to quickly read from the same sycophantic hymn sheet about what the show needed to be to get the popular audience back, performed all kind of dissociative mental gymnastics to convince themselves and others that there was a 'genius' and 'imagination' to what RTD was doing, and proscribed a pre-prepared list of the supposed underlying personality defects in those other fans who were more critical.
Often there was a cultish hypocrisy to those sycophants too. They would operate like a cultish lynch mob, and yet accuse those critical fans of somehow missing the point of the show's message of 'tolerance'.
That last bit is significant because it suggests that they didn't think of Doctor Who as just an entertainment show, but as some kind of religious moral mantra.
So when and why did this start? When did Doctor who stop being merely a selection of entertaining stories to fans, and become a kind of religious cult?