Is a short swing better?

If you watched the PGA tournament on CBS Sunday you would have heard about Kevin Chappel short back swing.  His short swing was discussed between the commentators.   They mentioned his teacher knew his backswing was too short but what a great ball striker he is?  So is a shorter back swing a fault or for some players is it the proper length?

I would say if you are right eye dominant your shoulder turn should not be over 90 degrees which some of the best right eye dominant players proved during their playing days.  This along with many other mysteries of the golf swing are explained in my new book, Golf for the other 80% which you can get on Amazon at

https://www.amazon.com/Golf-other-80-answers-improve-ebook/dp/B06Y5KMT9W/ref=pd_zg_rss_nr_b_16381_7