In this scenario Casey Rodarmor, Unisat, etc. is the origin of the attack but aren't the lone attackers.
why do you think casey had any malicious intentions towards bitcoin? my best guess is he was just some guy that wanted to invent something and he had no idea or anything about anything else. lets not label him as a bad guy without some type of proof. maybe he's dumb because he didn't know he was opening up a pandoras box but dumb does not equal malicious does it?