While I wasn't a huge fan of the tone here ("They really don’t give a shit, huh?"), it does seem like something that needs to be brought to everyone's attention.
That probably wasn't the most appropriate means of expressing my opinion. Apologies.
Hey, at least the substance is there... if this situation is as you characterized it, I see it as a rather massive breach of trust on the part of Tumblr. The tone might be regrettable, but that's a minor concern.