As someone who lost around 50,000 in the terra/luna collapse, I do believe a lot of it is on Do Kwon. He was the one that kept the Anchor flywheel at unsustainably high APR, moved more UST to refill the reserves and so on. He also ignored warnings of a death spiral and continued with advertising unrealistic expectations.

When the depeg happened, Do Kwon was front and center on making it sound like everything was under control, instead of damage control. And his creation of LUNA2 is even more of a joke for the people that lost money on this.

Is it his fault that it collapsed? Maybe not directly, but he steered the boat.