Ligue 1 can be said to be competitive without counting PSG. PSG has always been the most dominant in Ligue 1 for a long time. There are not many teams or even no teams that can really compete with PSG in Ligue 1.
Ligue 1 which is taking place is quite competitive I think in the 2020-2021 season. At least at that time, the top 4 standings competed with a small point difference. Lille managed to win the Ligue 1 trophy with only 1 point difference from PSG.
Luis Enrique doesn't have to stress anymore because he has players that completely understand the league, pressing moments doesn't bother them, they've high expectations for winning triumphant titles in France. When Les Parisiens step up their game in the UEFA Champions League, they easily get eliminated inother to portal the fact about PSG becoming one of the weakling team in UCL. PSG have transformed every atom of action in Ligue One. In the past decades, they've continued to dominate and win the league every single time without backing down. In their best peak, they're winning the title, in their worst form, they're also going home with a trophy, do we still consider Ligue One as a serious one? It's obviously a farmer's league, everyone can see it.