Earlier quoted context omitted.
I'm one of those "some people" you mentioned. It is indeed about morals. Violence, in my view, is definitely a character trait inextricable from genetic makeup and early upbringing (which sets significant epigenetic markers). That is exactly why people should be armed. There is no reason for violent criminals to be in prison, they should be dead either from their victim defending themselves, or those around the victi…
Not sure why you are downvoted and not parent comment; both make the unsubstantiated claim their position is rational and another position is not.
A more likely explanation however is that there is another reason why he is downvoted: because he suggests killing all violent offenders.