Managers don't like to put people into Focus or Pivot (unless the employee is absolutely terrible, which is rare). But we all have URA quotas to fill, mandated by HR.
This is absolutely terrible for team cohesion and morale; while also being the largest source of friction and inefficiency.
In my experience at the VP level you have many highly skilled reports who are gunning for your job. Once you get the VP job then there may be many more enticing opportunities at other companies with just tough competition in the current position.
The only time stack ranking was a force for good was when the French applied it to their ruling elite in the 1790s.
See also how people had to get a "certificate of civism" lest them be considered suspect by default: https://en.wikipedia.org/wiki/Certificate_of_civism