I never denied that it changes. I said that it's too complex to solve analytically, and I don't have the EM simulation software to evaluate it. My estimate is that most of the impedance change can be explained by the increased loop area, hence inductance, of the "standard" mounting method. My bottom line is the reality of the impedance difference, which I measured and posted.
All you've done, all you ever do, is whine.
John