Tumblr is a cesspool of the craziest and most extreme versions of feminism and all the other cultural movements that are usually bundled along with it such as LGBT advocacy. I think the source of this is that tumblr is a huge gathering point for lots of people involved in geek fandoms; particularly fandoms that tend to have a big female fanbase like TV shows such as Dr. Who and the 2d animated Avatar cartoon (not the 3d one). I'm guessing a lot of you posters here probably don't give two shits about such things but personally I'm a huge geek and I have an inside look into these fandoms and there is an extremely noticeable correlation between people who are involved in these sort of fandoms and who are also into batshit feminist/LGBT ideals. A lot of these people have huge victim-hood mentalities and are drawn to such subcultures where such victim mentalities are not only tolerated but promoted and treated as something that everyone should aspire to. It truly is an inversion of values where failure is celebrated and ability is looked down upon.