Just when we're starting to have a little fun picking on the nancy-boys, you have to come along and ruin it.
You are of course correct - the difference between sheep, wolves and sheep dogs covered elsewhere - but the antagonism is due not to the reluctance of the sheep to take up combatives, but instead their lack of comprehension and respect regarding those who are willing.
As to the "more danger...otherwise" comment, do you advocate capitulation for those lacking the "fighting spirit", or do you believe having moderate skill predisposes one to seek trouble?
Want to know the cold hard truth that every self-defense instructor knows, but won't tell you because it would be an end to his business? If you don't have the will to fight, it doesn't matter. No skill, moderate skill, highly skilled, it doesn't matter. Without that primal brutishness, you're going down the first serious confrontation that comes your way. You can do double jump spinning hook kicks or be the best guy on the shooting range, but if deep down, you can't tear his jaw off or rip big gaping holes in his chest, you'll hesitate on the street.