Tumblr is the opposite of /who/, but an ironic, dark mirror opposite, like the Mattress. It is a racist, sexist, hateful place and I hope you never go there. Officially ruined the image of Doctor Who which used to be a respectable show for British children and middle-aged neckbeards.
Tumblr is populated by SJWs who get off on the idea of RTD sodomising David Tennant with Billie Piper whipping them both. They despise current showruiner Meven Stoffat whom they consider to be the Antichrist to women's rights, non-whites and the gays.
If you are from Tumblr, pls go and stay go.
Tumblr Vs. 4chan
While the two sides seem to be at war they actually share a bit of similarities. While they both have polar opposite surfaces, with one being considerably more dank, the underbellies of both are filled with people who never stop complaining, neo-nazis (check your Nazi privilege, I identify as Gestapokin) and an easy access to perverted shit. However, 4chan has the advantage of creating Doctor Who General, and thus wins by default.
On The Bright Side...
Baiting fangirls with jokes about fictional events is an infinite mining resource of kek.