When one team has a multiple of the financial resources of any of the competitors, how can you conclude that it is a competitive league? When Messi, Neymar and Mbappe played for the same team, you call it competitive?
Or let us look at it differently. If you call Ligue 1 competitive, which it clearly isn't it, then what do you call the Premier League or La Liga?
PSG is 13 points ahead and has a score difference that suggests on average they win against a -1.5 handicap. Considering the results of many of the last seasons, it is not competitive. That doesn't mean no other team will ever win, but overall Ligue 1 is boring.
Ligue 1 is competitive, and maybe very competitive if we look to the table starting from the second position. The difference between a team and the teams directly above or under it doesn't exceed 3 points so the ranking might shift with every round technically.
Now when it comes to PSG, it is sure that they are very different from the others, mainly financially. It is basically the only team from years that is able to compete and reach advanced stages in UEFA Champions League, without counting the first place in Ligue 1.