I'd say its a mix of both. Most were probably damaged from the nose being the weakest part, but also I could see someone desecrating the old statues as well.
There's 1.386 billion chinese people on planet Earth. If someone is trying to discriminate against chinese people, it isn't working. I smell fake outrage.
How bout just M-Hole instead of Maintenancehole? In 2019 people abbreviate/slang everything anyway. Soon as it's renamed as maintenancehole, zoomers will shorten it. Or maybe instead of maintenancehole just an emoji of a metal hole.