Raul, You tend to use the term "distortion" to describe any factor that results in a deviation from perfect reproduction (whatever that is, and sadly it is often subjective) of what you perceive to be in the grooves. In that sense, I agree that electronics that distort and distortion due to tt speed aberrations could be lumped. All I am saying is that the two are qualitatively very different. They will be perceived differently. If you have perfect electronics, you will still hear the tt distortions. If you have a perfect turntable (in terms of speed accuracy) then you will still hear imperfect electronics. The two "distortions" are of a very different kind with respect to one another. This is why I wrote that one has nothing to do with the other. By now, we know how you feel about tubes. I don't think your analogy between distortions due to electronics and distortions caused by tt speed aberration is a very good one, for reasons just stated.
