When you're hosting an event that's intended to include people from all nations, cultures, and religions, it isn't enough not to be intentionally offensive, you have an obligation to take what measures you can not to inadvertently offend anyone.
Here's the official Olympics mission statement of the international Olympic Committee (IOC)
1. **Promote Olympism:** To contribute to building a better world by fostering a peaceful society concerned with the preservation of human dignity through sport.
2. **Encourage Participation:** To encourage the practice of sports and promote the benefits of physical education and sporting activity.
3. **Celebrate Excellence:** To celebrate the highest levels of athletic achievement and to inspire athletes to strive for excellence.
4. **Foster International Cooperation:** To strengthen the bonds between nations and cultures through the shared experience of the Olympic Games.
These principles guide the organization and execution of the Games, aiming to uphold the values of integrity, respect, and fair play."
(Emphasis mine)
I can't imagine that the people putting together the opening ceremonies were completely oblivious to the religious associations people were going to make with the scene.
Whether the scene was intended as a parody of the last supper or not, they must have known that a lot of people were going t take it that way and be offended by it.
That's reason enough for condemnation.
The principles that you present are certainly sound and proper.
A couple of days ago I would offer that they are not reason enough to make so much concessions to certain sensibilities.
Today I just don't think there was good reason for the feathers to ruffle at all. This may well have been an unexpectedly good event precisely because they did and may now learn a bit better.
They are. And the contrasts, on the contrary, are far too easy to overlook.
IMO what that indicates is that we have collectively become a bit too reliant on Christian references and expectations.
May I present you a small challenge? Can you find me a couple of pictures of people around a long table that do not resemble the Da Vinci painting?
Maybe I am being biased, I don't know. I hope you can surprise me.