You are wrong. Just buying many superstar players doesn't mean the management is good in PSG. They bought many famous players like Messi, Neymar, and Ramos for PSG and obviously, they spent a huge amount of money on these players while the other items couldn't do that but it doesn't mean they have good management.
PSG doesn't have a balanced team or at least they didn't have this situation before and that's mostly because of management in this team. Until they bought Enrique to get things together.
Agreed, they can bring in star players purely because of the money they have, because they also bring in those players when their time is almost up, so when they offer big money they will be willing to accept it. Another fact is that they were also unable to bring Paris Saint Germain to an impressive performance in the Champions League, there were often conflicts between them.
Paris Saint Germain's management only relies on money and that doesn't mean they have very good management. In my opinion, if we want to see good management then we can look at Real Madrid and Manchester City for example. I think they are a team that has had good management so far.