While I'm loathe to agree with anything on Tumblr, they do have a point. PETA are a bunch of hypocrites, and anti-human to boot.
As far as the use of animal products, my position remains the same as it always was: I'm not opposed to it so long as the animals are treated humanely while they are alive.
Humans have been using animals for food, clothing, and work since the beginning of civilization, and it's pretty absurd to expect them to stop now. Come to think of it, there's another group of people that PETA conveniently ignores--residents of the developing world who still rely on animals as beasts of burden.