There is the "Uesless So Promote Them Boss"
We had this a lot at our company.
If you had a useless clerical person, you couldn't sack them (also wasn't worth the effort) so the best way to get rid of them was to 'promote them out' to another department. "Congratulations! Bye Bye! Ding dong the witch is dead!"
However, this kept happening over and over so by the time I left, we had people that had zero social skills, couldn't count to ten, manage their way out of a paper bag etc. now at Head of or Director level.
The other problem was they thought they were gods as their rise had been so meteoric. Unfortunately, we were all in on the joke.
So if you've reached a high senior level, just think back how regular your promotions have been and whether any of your previous colleagues actually bother to keep in touch or walk the other way when they see you. If so then you may be one of them and everyone else knows.
Kind of where good employments rights can bite you hard.