You can apply selection when you form a new team for a new project. Then you select the best people for that project. Ranking scores are unidimensional, absolute evaluations of people. They can be abused by adding penalties based on frivolous criteria.
In China, Ali Baba and others have created a ranking for regular population, called the "social credit". If you make friends with someone who has a low rank score, your own score will be penalized (they want to control who people make friends with and socially isolate people by descoring them). Also, if you watch too many American movies instead of Chinese. These scoring systems (and even Google's Page Rank) pervert the normal behavior of people.