It looked more like bacchanal paintings to me.
The Last Supper was a lot more composed and less chaotic. Leonardo made great use of geometry (ironically imitating the ancient Greeks there) to compose his painting. This is in contrast to the disorder you see in paintings that portray the feast of Dionysus, which is what they were portraying in Paris.
Also note that the Last Supper wasn’t original either. That painting was done somewhere between 1495-1498 CE. Here is one example of an earlier painting done in 1447, a full 50 years earlier.
And that’s just one of the earlier examples of artists portraying the subject. One thing that made Leonardo’s painting different was how he portrayed people; before, usually everyone but Judas was shown as having a halo. Leonardo chose to give Jesus a halo, and he alone; Judas was singled out instead by having a shadow on his face.
But regardless, the Last Supper is not the only painting that looks like this, and wasn’t the inspiration for what was in the Paris ceremony. And frankly it’s arrogant and ignorant to think otherwise.
(I am not singling you out for that comment by the way, I’m directing it toward everyone outraged by it without knowing what they’re even seeing.)