Apparently it’s not the Last Supper but even if it was, what part mocks Christians? Like nothing in the stage direction is mocking, so it must literally just be that they don’t like drag queens.
A drag queen performing a Queen song isn’t mocking Queen. They just are a drag queen while performing Queen. I wouldn’t be offended by that as a Queen fan.
The most charismatic man I know is my uncle, he worked right near the WTC on 9/11 and even though they closed his bridge home because it was 9/11 he sweet talked his way across.