In Croatia we don't have such problem (at least as I know). Usually when I drive and the other motorcyclist comes from other direction he waves or smiles as hello. I see no reason for arguing with motorcyclist, at least they can pass us through without problem.
But with car drivers is another situation cause we don't have special marked paths for bike drivers (there are some but mainly in the capital city where I don't drive). And, unfortunately, there will always be drivers who thinks the road belongs to them