Completely false.If you get him to the point when he quibbles about semantics, then you've won, or at least the debate has ended; at this point in time, there will be no more substance to the debate and he will more than likely try to bait you into flaming him.
What you're talking about only happens when the other person can make an original point, and it forces me to have to repeat myself because they keep saying the same dumb things.
Go ahead and watch the next time it happens between me and another poster. You'll see what I mean.