Perfect answer. Especially in secondary schools there is plenty of scope for executive heads to spend very little time in the school, claiming they are at their other site/in a meeting/gone to be Very Important at some professional event, to claim travel expenses between schools. The head of school is run ragged trying to do the day to day running but with their hands tied on a lot of things because of excessive bureauracy especially if the executive head is a control freak (maybe due to shady dealings). Lots of "all orders must be signed off by me personally" yet they are hardly ever there to sign stuff.
in addition, usually the deputy head role can often be removed or downgraded, putting pressure on those further down to assist the head of school with what the deputy previously would have done. There was probably a good team before consisting of a Head who did all the strategic management and held overall accountability, working very closely - daily - with deputy head, with decisions made very efficiently.
In short, you change efficient systems and structures to completely inefficient systems and structures, with the poor staff doing their best to absorb the resulting stress while trying to present things as great to the students and their parents.
Executive head will most probably convince governors of the need to restructure and then bring in their cronies in newly created senior positions. Some of whom will be brought in to make the lives of those they want to get rid of a misery because they are too expensive or "a trouble maker" (ie. they are assertive, want the best for the kids, and are not afraid to speak up when they see unfairness)
Oh, and they are VERY good at marketing and making it appear to parents that they are doing wonderful things, saving the school, lots of online presence, media articles, snazzy new webites etc etc....
All an absolute load of bollocks.
Maybe it's time for me to retire. 😂