Tiktok is very pro-Palestine indeed. Compare that to the fascist shithole that reddit is right now (or always has been), and I'd say the kids are alright.
Most likely, yes. There's a confluence of NatSec ghoul interests and monopoly tech interests behind floating a TikTok ban. The ghouls want to limit pro-Palesinian content (which TikTok seems to support simply via a less biased algorithm) and tech monopolies that want to retake a position in what is basically Vine with a better algorithm and dance and thirst trap and comedy trends.
It's been coming for a lot longer than the few months since Palestine was back on people's minds. No, this is all about China vs. US.
I agree. It is not in any way a main reason. But it is a data point about how the west does not like a social media app that is not within their complete control.