You were comparing first half last year with first half this year. Same basic team, same manager, much different results. The conclusion is it's the manager's fault. While I believe that's a great first step, I started this thread after all, but it hides too many other problems.
This shit show is bigger than just TLR. It's a three legged stool with players, front office, and coaching staff. They all have regressed and are failing beyond what could be expected from one year. As you noted the players are putting up much worse numbers.
I also seriously wonder if Tony is experiencing diminished mental function over the last year. Stroke? Dementia? It's a private matter with the team but I would hope a condition of his continued employment is a full medical workup.