A very relatable story. Of course, we all feel sorry for those other Tims out there who were not lucky enough to have such a good manager. Partly, because we see the Tim in ourselves.
I think this is what we can do to help: Remember sometimes we are also those co-workers who took help from Tim around us and conveniently forgot to Thank their contribution in success of our project. A simple thank you note in the right meeting, slack channel or in the project delivery mail goes a long way. Measuring the indirect impact of an employee is hard, even if you were the manager at any level. Taking help is not a sign of weakness or acknowledging the contribution of a co-worker doesn't make your effort any smaller.