I'm actually impressed, from the first few lines I was expecting another social justice fueled witch hunt, but instead we have the exact opposite here.
Without getting into controversial labels, it's not clear to me who did what to whom and what the people are petitioning for. I seemed to me that (all allegedly) someone was outed as into BDSM and was somehow treated unfairly. I think that certainly falls into the domain of liberal sexual identity politics.
Goreans are people that agree with philosophy of professor John Lange, that writes his philosophy in porn books with pen name John Norman
What got Larry kicked out is that similarly to Abrahamic religions, Goreans believe there is an inherent hierarchy between men and women. Or at least it is what Dries (Drupal leader) wrote as explanation for the incident.
So Larry is being punished literally for "wrong-think", having beliefs that are shared with billions of Abrahamic religion followers around the world. But Goreanism is not a religion, so probably doesn't count as religious discrimination.
Also according to a blog lost by Larry, the "proof" used against him was a transcription of a discourse he made in a private wedding.