The post was very clearly saying that Ghengis Khan and the post-Mongolian Chinese state is a worse form of conquest and murder because they were conquering and killing their own people.
But the US was killing Native Americans which weren’t citizens, so it is not as bad as killing your own people like the Mongolian/Chinese/Mao.
I like Feeder, even if I think it’s use of the back button can be a bit counter-intuitive sometimes.
https://f-droid.org/en/packages/com.nononsenseapps.feeder/