To be fair, it's not like Randle is a huge defensive liability. I agree that ideally we'd want 1, 3, and 4 positions to be great defenders to cover for Booker and Ayton, but I don't think Randle creates an additional liability on defense.
All the advanced stats say Randle is an average defender, - average, not below, not above.
I am not someone that believes Ayton's defense is a problem, I fully expect him to be a competent rim defender, to me it is just a learning process. It is not like he does not have the athletic ability to do it, and I think now he will get the proper coaching.
Booker on the other hand I believe will probably be below avg defender forever - but I will forgive him because he is a transcendent scorer.
This criticism of Randle is just stupid.
He is the best young free agent - other than Deangelo Russell - available.
He is basically the best the Suns could realistically possibly do, and all anyone wants to do is criticize his weaknesses.