This is a big achievement for PSG and PSG is very happy with this achievement. Before this, PSG had planned everything and spent a lot of money to win only one Champions League trophy but they could not win any Champions League title and despite having many big stars in their team they failed there but this season with a solid team PSG defeated Inter Milan in the Champions League by 5-0 goals and won the Champions League title. The biggest role behind PSG's victory in this Champions League title was played by the team's manager Luis Enrique. If PSG had appointed someone else in place of Luis Enrique, PSG would never have achieved this achievement so PSG should give enough respect to the manager.
This is definitely a big achievement for PSG, we have noticed before that they spent a lot of money and planned a lot in advance but they only managed to reach the final at that time. Even the president of this club congratulated all their former star players, maybe he did this out of joy at becoming the UCL champion. Maybe they should forget about past seasons and celebrate the fact that they won the Champions League trophy this season. In the previous season they had many star players as you mentioned but still they could not win the trophy but this time they have been able to play very well with a self-reliant team and they snatched the UCL title by defeating a strong team like Inter Milan.
PSG is a very strong and efficient team and it has achieve a lot of strength and success this season which they have achieve through a lot of hard work and in other ways they have become strong through coach and play. It was very good for them to do this because the players of their team have play and won matches with so much hard work and strength. Whatever it was they had to do it, but they did it in a way that made these players happy. PSG is playing with good strength and they have play matches with a lot of hard work and playing well. If they had not played with hard work this season they could have lost this year trophy. PSG has played a very wonderful season and they have been very strong and have been win matches by weaken all the teams.