Ousmane Dembélé's improved performance this season is actually inseparable from Luis Enrique's strategic approach towards him. Ousmane Dembélé is often played as a center forward, but he is free to move wherever he wants. He didn't really get this kind of approach while at Barcelona, not even in his first season at PSG.
There are 9 matches left and PSG is very comfortable at number 1. The difference of 19 points, they are very comfortable. I think they are also ready to make a record by going unbeaten this season. It seems that the League Title can be known sooner, even if PSG loses 6 times PSG is still the champion of Liga 1. It seems that this effect makes PSG very comfortable in the UCL. They were able to get rid of Liverpool as the favorite.
But I think for the UCL champion is still very difficult, there are big teams waiting. But for the semifinals, I believe the favorite PSG will qualify for the semifinals, because they will meet Aston Villa. Regarding Dembela, you are right that the statistics are extraordinary, it seems that in Barcelona he had a lot of injuries but at PSG he was the main player.