Everybody is protected by law AFAIK.
No Shirt, No Shoes, No Service doesn't equate to "RMS is a bad person" if RMS happens to not be wearing a shirt, it just means he won't served based on that.
This org isn't RMS phobic, they are - against the actions / views RMS has perpetuated, and from his position of power, so they would like someone else to be in power, that's a pretty simple request, and I am sure there are a lot of qualified people to lead who haven't brought so much baggage along with them.
That said, this is clearly just a polarizing issue that folks don't really appear capable of discussing because I mean, what's there to discuss, are you on the FSF? Do you know RMS? Have you worked with that org at all? I haven't!