If the coach was a figurehead, it’s not necessarily his fault or the management’s. What is the likelihood that a serious coach would put Neymar on the bench for violation of discipline? What is the likelihood of Messi getting into the starting lineup and playing more than a half, given that he walks most of the game? I think in the first case 100%, and in the second close to 0% But they are big brands so the coach did not have the power to act with them as he should have. I don't even blame the management - if the stars are capricious, then the only mistake is signing them. Nothing can be fixed further.
Some purchases like Messi or even Sergio even though it is good enough to boost their name when talking about popularity but in the end they are not able to take PSG in a better direction because if it is only at the level of ligue 1 alone it proves that their achievements are very stagnant because they seem to look great for the quality of players but in terms of performance they are very weak.
This is difficult to change because they are always eager to do it every season. Currently the Enrique era is a little more different because the current priority is more directed towards young players even though until now it has not been seen but significant changes by eliminating players who are no longer able to contribute more because of age problems I think it can be a good start but it is also still not fully realized properly because there is definitely a process that must be done.