Saying PSG is better this year than they were last year does not seem so true to me because performance recently is not as impressive as it were last season but they are actually not doing terribly they will definitely get much from this season, they will have a lot to contend with this session then they did last season so they will need even more effort to be able to do as much last season.
While I'm not worried about their performance in Ligue 1, they may have to work harder for the Champions League.
At least considering their performance at the start of this season, compared to PSG's performance at the start of last season, I agree with your opinion that their performance isn't as impressive as last season. But it's still early in the season, the competition is still going on, and we'll see if the competing teams can be consistent.
Last season, they won the Champions League title as easily as they did last season, but this season it will not be that easy for them to win the Champions League title. Last season, they defeated Bayern Munich, Liverpool and Real Madrid and reached the Champions League final. Similarly, if they have a challenge to perform against these three teams this season, then I would say that this challenge will definitely be difficult for them. Bayern Munich has changed a lot in their team and this season they are ready to perform well in the Champions League. Liverpool has sold some players and added some new players to the club, as a result of which we can understand from their performance in the Premier League that their performance has changed a lot, so it will be difficult for PSG to beat Liverpool. Similarly, Real Madrid's obstacle will be the biggest obstacle for PSG and I think that PSG may not be able to overcome this obstacle this season.