Agree 100%
Well, maybe 98%. Not sure which comes first, chicken or egg. Maybe watch, analyze and then watch again, or some more.
But honestly, I don't see much of "the coach is a dinosaur because he doesn't deploy these guys together". I see (and sometimes write) head scratching. Why doesn't the coach do it differently, despite all of this evidence?
Your observation helps explain why the stats show what they do. That doesn't change the fact that Scheif and KC is a poor combination and Scheif Ehlers is a good one. So we are still left wondering why it must be the way it is.
So far this season Connor (and to a lesser extent, Scheifele) is playing much better and it is showing up in their stats and in the win column. I hope they can keep it up.
Something I think I have seen this year is KC carrying the puck more than he did in the past. Not so much on zone exits, but on zone entries. It is another addition to that lines weapons.
That's about what I suspected. They have been effective, so that deployment of KC is not really necessary. Not sure why it was done that time.