There's no 'disagreement' from me. Nor is there ‘disagreement’ with what I wrote or suggested.
Panning is yet one other technique for Sports work and it is more suited to some sports than others.
That stated: Panning is useful for some images of field sports, like hockey or football, but, it is usually more often used for sports like cycling (nice shot frame #1) - car racing; go carting and skiing . . . etc.
Panning brings into play another critical criterion of Shutter Speed selection, which becomes the predominate factor and is based, primarily upon, the speed and direction of travel of the Subject and the framing of the Subject.
Just as in post #5 there is the list of criteria for the Shutter Speed to STOP movement: the idea of Panning is to affect a perfect shutter speed, to stop the subject, but to blur the background.
But the ISO selection is also dependent upon many other issues, not just the type of sport and not just whether Panning is employed as a shooting technique or not.
For example, if one were shooting cycling only, but in Velodrome – then it is very likely that ISO would be above ISO100, even if the shots were panned, simply because there would (often) not be enough light in many Velodromes to allow even an F/2.8 lens to compete at ISO 100.
The same would be true for panning a shot of Road Cycling, if the day were overcast or if it were early morn or late afternoon and the light began to fade.
Opposite to panning, is another technique to convey movement and that is to purposely slow the shutter speed (but have steady camera) to create the impression of movement in a blur but still have enough of the Subject recognizable:
Also, yet another shooting technique, is to be at the same speed, as the athletes:
WW