There's something very VERY weird about Who fandom. I'm only on the far periphery of it, but people I know describe a long history of factional bickering, one upmanship, poor behaviour, betrayal, backstabbing and outright unreasoning, unremitting hatred.
I relise Who has been going for so long things have had plenty of time to fragment and become acrimonious, but for crying out loud, it's a bloody T.V. show...
I think a lot of the problems in Who fandom stem from the unavailability of the series for such a long time. Star Trek fandom had daily reruns in the 1970s. Doctor Who fandom had memories of how things used to be. There were dividing lines based on how far back one had seen. There were people who had access to the past and people who wanted access to the past. One's fandom could be measured -- and judged -- by what one had seen, by what one remembered, by what one had kept along the way. Doctor Who fandom wasn't a casual fandom by any means.
Maybe Doctor Who fandom would have been in a better place psychologically if the BBC had done daily reruns in the afternoons after school. Of course, that would have meant different contracts with the various unions, and that would have meant money, and why would the BBC ever want to spend money?