Colonel Robert F Sink - The Sadistic Godfather of Easy Company & The 506th PIR (Band of Brothers)

Colonel Sink was the founder of the 506th PIR before it joined the 101st airborne. Sink led with an iron fist which led to almost 3/4 of the men joining parachute training at Camp Toccoa, Georgia washing out of the program.
Was Sink doing the right thing as a CO or was he too extreme in his command?