"Death rituals" are a part of every culture.
There are reasons for them. The time is not wasted.
THat you dismiss the cultural concerns of those who are different than you, that you look down on, is nothing but intolerance and narrow mindedness.
actually, not so much.
Back in the 19th century, it was a common practice to prop up a dead family member and have one of those new fangled photographs taken of him.
Today, we'd consider that weird.
Today we put a bunch of makeup on our dead relatives and create the illusion they are just taking a nap in that box, and we tried to ignore all the unpleasant things that were done to the corpse so we could have this weird little ceremony.
Let's be blunt, you guys don't care that General Forrest's body is being moved.
You care that his place of honor as a historical figure is being RIGHTFULLY revoked (retroactively).