If we are the ones who follow Paris Saint Germain's journey when they are in the Champions League, then we will see something different. The first thing I see is that the teamwork between them is now getting better, that is a change that is quite visible from them.
Now if we look at how selfish the Paris Saint Germain players were before, especially when they had many star players, then this time the players have been able to suppress that so that it creates good teamwork as I said before.
With what they have shown, it is not impossible that they will create history in the Champions League.
I agree with you and it comes from their strategic change recent years by letting Messi, Neymar and Mbappe going away and continuing their club development without new super star players.
Their squad now are more united and their players don't have internal conflict of interests like how it existed among Messi, Neymar and Mbappe or among Neymar, Mbappe and Cavani. It's always better to have an united squad with which every player knows his responsibility and role in the squad operation and is ready to support his team mates as most as possible.
In fact PSG did not start this season in Champions League too well and they only managed to exit group phase at the end, but after that their patience and strategic development began to show its positive effects. Now they are very closely to the final match and a most wanted title in Europe, UEFA Champions League trophy.