Except in the West, the definition of rape has gone far beyond its original concept. For example, “marital rape”, “statutory rape”, “date rape” with drugs or alcohol, and “rape after the fact”, when someone is convinced by someone else that they were raped. Likewise women can rape men, and there are other interpretations.
But only in the case of Islam is rape not just acceptable, but specifically authorized and encouraged. In a few cases in the UK and US, Muslim rapists have been excused from punishment by judges recognizing “cultural differences”.
Granted, if someday, Baptist preachers encourage their parishioners to rape Mormon or Buddhist women, that would change things.
I agree that regret is not rape and that sleeping with a 17 year old is not morally the same as molesting a prepubescent child. But using drugs to knock someone out for the purpose of having sex with her/him is rape same as if the perp used his/her fists. The presence of a marriage license also does not justify forcible rape. You don’t force an unwilling spouse to have sex, you just divorce them if it has become a marriage in name only. A frigid spouse is about as useful as a car that won’t start and significantly easier to replace.
Singling out a specific ethnic/religious group would also be overturned by the Supreme Court.