... because women are never elitist, exclusionary, or judgmental. The way that site turned that meme on its head is clever and smart, but the question of "Do men ever get alienated by women?" is a bit of a howler. You might as well have asked "Do women have opinions about things?" "Do women think?" "Are women actually people?" (The answer to all of those is an obvious yes, in case I have to spell out my internet sarcasm.)
No, it's not nice to exclude people. No, it's not "okay" because women can do it, too. It's just... actually, no, it is okay. There's no fundamental law that you have to be friends with everybody. In middle school, when I would sit down at the far end of a "girl table" and the girls at the other end would all get up and leave, I wasn't hurt. It's not their job to like and accept me. I was looking for a place to be alone and they didn't want to have to acknowledge the presence of the creepy guy over there. I saw it happen to another guy once back then and he sort of pouted about it, but fuck him. People aren't just going to be your friends because you want them to be. This is true of guys with guys, girls with guys, and girls with girls. It's not bullying, it's being selective, which you have every right as a human being to be.
People are dicks sometimes, both women and men. The internet just gives certain men an outlet for whatever obscure thing they're into, anonymity, and access to the opinions of millions of fellow misogynists. But to say women never like to exclude people from a group? You have to be kidding me.