On the second point, to be fair you can look at the UST graph and see that someone did indeed burn a tonne of Luna to support UST. It's probably impossible to really prove that every penny went to supporting it, and it's probably impossible/unlikely that Do Kwon really bankrupted himself for this, but at the very least we can say someone decided they were going down with the ship and set a lot of money on fire. Difficult to see who would've done that other than LFG.