I don't remember Andrew Hore claiming Christianity at all - in his appeal he showed remorse and the IRB noted his otherwise spotless record. Regardless of what people say - that was an isolated incident of on field behavior that people choose to extrapolate to his entire career. Don't know how guys like Rougerie and Heaslip somehow avoid the same level of scrutiny considering one eye gouged (and was totally unpunished) while the other kneed another player twice in the heads. Regardless, the issue was that Botha made a total habit of continual thuggery, particularly towards smaller players.
They're not totally isolated though. What he did was continually outside the accepted bounds of the game - and it does come off as hypocritical being extremely Christian but also going to lengths to assault players off the ball, take cheap shots and end careers. One of the tackled he did on (I think Kockett) when he just dives shoulder first into his planted leg while going for the kick, and bending it backwards, that's could easily have been a guys career done and dusted right there, and there was no reason to tackle that way other than to damage the guy. And if he was Muslim I would feel the exact same way.