Earlier quoted context omitted.
" he was apparently good at managing the program." That's one thing a lot of people don't understand. A lot of these monsters aren't just monsters but they are also very capable. Beria was a good manager, so was Himmler who led the Nazi SS. Stalin also was a hard worker and a master bureaucrat.
You are underestimating how effective a "management" technique is demonstrating that you can shoot underperforming minions. A lot of that "management" was simply terrorizing people to do your bidding. So, no, he most likely wasn't a good manager the same way a bank robber isn't showing "good interpersonal skills" because he was able to convince all patrons to sit by the wall and employees to open the vault.
I am somewhat skeptical of this take. I think if heaping abuse and threats of worse on people worked magic, there would be no homeless people in the US.
Threats only work if the capacity is there -- or almost there -- and it's feasible to extract X with sufficient pressure. But you still can't get blood from a turnip.