You're absolutely right, of course it's irrelevant (at least to us it is), but if it can give some people arguments, answers of some kind to those annoying feckers who insist on going on and on about sodding Hitler, well, why not.
I personally prefer to list the amount of mass murderers who are or were meat eaters (ie, all of them), and if the Hitler argument means to them that all veggies are bad, or that being veg is nuts (excuse the pun), then surely the murdering dictators who ate meat also represent 'normal' meat eaters, end of argument. Sod them, I don't really care what they think or say, but I'm sure some people would like to be able to deny it with some facts to support them.