Straight from the horses mouth....."Did I? I did it a lot." This is what most offensive players did back in the days.
https://www.youtube.com/watch?v=SgUqb5hWAVY
Every coach in every level of basketball will tell you to play defense with your feet. It is consider lazy to use your hands when you have to move your feet and get between the offensive player and the basket.
That era was horrible from a fundamental and defensive standpoint.