I think I can help answer this for you.
A depraved culture that's gone TOTALLY off the fucking rails is the only way mutilating a child can make any sense.
And it's not just America.
Western culture in general has flushed itself down the toilet the past 50 years. Whatever moral glue there once was in the West is gone. Europe and America were once the envy of the world, but when moral relativism sunk its fangs in, the clock started ticking. It's an internal rot that's going to do more damage than any foreign army could possibly achieve.
Parts of the West will survive. But not all of it.
Since we're on the topic, on a fight board, I'll use a fight analogy. An apt one, IMO.
Look at McGregor.
Now look at Khabib.
When you realize that both of those guys are products of their cultures, it's easier to understand why Khabib has been sailing through retirement while Conor has been doing an Irish Tony Montana impersonation. Degeneracy is celebrated in the West, while it's still looked upon as a vice in the East. Act like a shitty human being in the West and you attract followers. Do it in the East and you become a pariah.
And this is why my daughter's boss will probably have a Chinese surname in 30 years.