I’ve also seen it said that skeletons aren’t banned by the government, but removing them is still recommended because it might offend certain groups in China, so the censorship is more along the lines of what you might do not to offend Christians in America.

What I do know is that the guidelines as written are pretty vague, so it’s also possible the interpretations have changed over time and that Chinese people living in that culture are probably far more aware of where the line gets drawn.