He stood up and protected you and proclaimed his choice of you over them. There really isn’t anything more he could do.
If he is willing to cut his parents off, there is no need for you to cut him off. In every way that matters, he seems to have your back.
The good thing is, his parents now know, it is their out-moded beliefs or their son, a nice simple binary choice. Few children could confront their parents the way he did for you both.
Edit – You might want to have him send that link to that english newpaper.
Im so glad your boyfriend is taking your side, not that it should even be a choice. But im glad to see he wont tolerate it.
He’s handling this pretty well, as are you. When confronted with these “tests”, it’s amazing how often people in your bf’s position fail. He’s proven you can trust him when his parents are in the wrong and that’s awesome. Good luck.