They are getting downvoted because they are arguing against a straw man.

>But the US funding/providing weapons to Israel in the Gaza war is not a genocide?

Nowhere did the comment they replied to claim that the war in Gaza isn't a genocide.

You’re right, but if you admit that, it’s hard to claim that China is more brutal than the US, and therefore less trustworthy.

  Nowhere did the comment they replied to claim that the war in Gaza isn't a genocide.

The author I responded to thinks China is worse in terms of genocides/killing people than the US. Therefore, the US is more "trustworthy". I gave examples countering that.

The US has always dealt with Islam extremists with bombs and killings. China is doing it through education camps. No, the camps probably aren't pleasant. It's a hard problem that requires a hard solution. But to me, China's way seems way more humane. Viewed in another lens, perhaps China deserves a Nobel Peace prize for their camps instead of being labeled as a genocide.