This meme is just confused. The Feast of the Gods motif would be familiar to da Vinci and whether it was deliberately referenced or perhaps just a visual convention of how to portray a feast, and who influenced who are questions best asked to an art historian specialized on the time period. But ultimately it doesn’t really matter - da Vinci’s The Last Supper is one of the most iconic images in history and it’s not strange that people watching makes the connection, I certainly did even if I also got the reference to Les Festin des Dieux. Of course the idea that the ceremony mocks Jesus or whatever is a hysterical reaction, but that’s American evangelicals for you.

Connecting this to christian adaptation of Pagan holidays and motifs, however, is farfetched and ahistorical. The Last Supper is a painting, Leonardo is not the christian church. Leonardo was active during the high renaissance, a time when the ideas and imagery of (mostly pagan) Antiquity was reintroduced into christian europe. References to pagan rome and greece was à la mode in art.