I’ve worked with and for people in senior management positions who refused to get out in the field and do the work themselves (usually selling/customer product research). This is a little different than what you’re referencing, but I do see that it is very much the same pattern. And, when I had worked with them for two or three months and they hadn’t done it yet, I knew that they would never really understand the customers and never be able to make a huge impact in the organization — which was true each time.
One minor thing that I would throw out there to add to this is that well structured, documented learning (from trying real things) from the first 90 days can be a good proxy for meeting a goal that might be tough to quantity at the beginning of 90 days, especially if you’re hiring somebody to do something that you yourself (or your team or advisors) haven’t done before.
Thanks for sharing.