I know we are taking all of this off topic but Cambodia is not one of the places that has opted for responsible tourism.. fragile is the right word for the sites and u need to figure out how tourism is right balance and manage if u want it to last abbd not ju st take short term cash out of it. We were there in 2003 or 04 and the sofitel was opening next to the royal angkor. I think it was the second ir third new hotel..i can't even imagine what the strip looks like now. Everything was brought in including flowers and fruits and vegetables where the idea wsss to build local cottage industries to provide. We were told to stay on the cleared paths since there were still clearing mines. We actually went to an outdoor display of landmines that was one of the most interesting and creepiest places I've been. Also went to bantay srai
And heard the stories of what happened on the roads as you suggest.

we visited Macchu picchu in the 70s and I don't think I could return and see the changes. Progress comes in all sizes and shapes.