Garland,
Not sure its indiscriminate. The "Tee it Forward" chart had course length suggestions for every 25 yards of length of average tee shot from 125 yards up to Tour Pro. Not about universally shortening, just shortening to some reasonable length based on individual golf swings.
I don't see anything wrong with it. After all, for years we tended to lengthen courses overall, based solely on the distance of tour pros or the top 0.01%, while most golfers picked up very little distance. So, in a way, this is correcting recent mistakes rather than a sign of anyone giving up on difficulty. And, the individual courses or players are responsible for setting each hole, so again, not totally discriminate.
For that matter, for someone who recently chastised my posts as logic adjacent, I have to comment that I see no real logical correlation between length and the tendency towards stroke over match play. In either case, a shorter course would theoretically just remove the equivalent of the mid shot on par 5 holes, and make more shots of each competitor whether match or stroke, tend to mean more as either a tee shot or approach shot.
Just MHO.