I hope Leverkusen does not perform too poorly. I actually also hope that Dortmund, which has been a competitor for Munich in several previous seasons, can rise again. I actually assess that the quality of the teams in the Bundesliga is better than Ligue 1. However, if there is no team to challenge Munich's dominance, it will indeed look similar to the unquestionable dominance of PSG in Ligue 1.
Hopefully, Erik Ten Hak doesn't let Leverkusen slump this season, because it would be a shame if he failed again like he did when he took over at Manchester United. Keeping up with Bayern Munich might be difficult because they are currently so strong, and I think Leverkusen must be able to keep up with Dortmund if they want to finish second. Chasing the Bundesliga trophy is almost impossible at the moment, because Leverkusen has lost more of their key players following the departure of Xabi Alonso, so it will be very difficult for Erik Ten Hak to strengthen the team in his first season.
You may accuse Erik Ten Hag of failing to lift Epl, maybe that was the failure you mean. But generally, I don't think ETH failed in Manchester United where he spent 2 years with two trophies. He ended up qualifying the team for Europa using the FA cup in his last season. Bayern is a difficult nut to crack in the league and everyone understands their dominance. Leverkusen under Xabi Alonso was also great and full of passion but it would be unfair measuring ETH with their previous achievements knowing fully well that most of their players are no longer there. Maybe Erik Ten Hag would clean up his name later in the season because currently, there's absolutely no hope for the team and I don't see them as one of the title challengers.