Well, let's not throw around slurs invented by Rush Libaugh ... But, yes, there is a strain in feminism of bigotry toward, well, pretty much any people whose identity could be transgender.
It's hardly just feminism. In any group that one might think would be natural trans allies, you can find a few bigots -- feminists, gay men and lesbians, the poor, ethnic minorities, even transgendered people of a different sort, pretty much any oppressed group. When people suffer oppression, it's a natural tendency to look around for someone lower on the totem pole to oppress. I think you are experiencing exactly the hypocrisy that the blog is pointing out.