Your comments actually agree with two of my points. I completely agree that DDK players (or perhaps we should say high DDK players) do not have the skill to take advantage of the first move. That is the core of my main argument. However, it can be applied up the line as well, I think, though no one knows where it may stop. In other words, pros have more ability to take advantage of the first move than do SDKs, etc.
Yes, I’ve previously seen the argument that DDK games hinge more on blunders than on komi. In a sense that supports what I’m saying: that pro-derived komi can’t reasonably be applied to DDK games. What is more important, is that it is a poor argument for saddling someone with what is in effect a handicap from the beginning. If we know they can’t take advantage of the first move, then we are knowingly handicapping them.