I appreciate this post a lot. Rocco may not be charismatic or super-likeable, but I don't think we can deny that the Twins have been for the most part very good over the years that he has managed them. Sure, not all of that is on him (most of it probably isn't), but neither are the downs.
It is easy to nitpick his pitching decisions, but for the most part the analytics-based decision making, which almost certainly comes directly for the front office, has been working. I think the post hits the nail on the head - if we were a terrible team, no one would really care about these decisions. But since we have a very good team, he is an easy target for the critics to criticize.