For a club that kicked out Liverpool, Man city, Anston Villa and Arsenal, dismantling Inter to a 5:0 defeat wasn't a surprise. They were outstanding including Desire Doue in the match doing his best as a young star. Inter couldn't stand the playing strategy of PSG just as the top English teams weren't able to decode it. The Perisians only got better unannounced.
The final match between PSG and Inter Milan was indeed a surprise to many people, especially since the score was also unusual, namely 5:0. It was something that was unimaginable before the match and even the finals that have occurred in the Champions League have never had a score that much. So PSG cannot be understood by all the teams that have faced them last season, namely the teams you mentioned, and I hope PSG can continue like that next season with some improvements because overall PSG's performance is clearly quite extraordinary when compared to other teams.
To be honest I never believed for one day that PSG will win inter Milan especially since inter Milan won Barcelona so it was surprising to me that PSG won inter Milan, I predicted inter Milan to win that match but I was surprised and shocked that they lost.
PSG did very well they surprised everyone, before the game I was saying that if PSG win the match some fans will mock or laugh at kylian mbappe and that was exactly what happened and I'm very sure that kylian mbappe will regret leaving PSG because one of the reasons he lift PSG was because they where on able to lift the champions League trophy and he really wanted to do it.
With the way PSG played this seasons champions League I believe next season they will still have a chance to fighting for the trophy however it still won't be easy for them because other clubs will do everything possible to make sure they also lift the trophy.