So it is $2 million x probability payment vs $100 million x probability escape without getting caught.
Even with the threat of non-payment, not sure I could ever feel at ease with a multimillion bounty hanging over my head.
These chains are created by startups with VC money, they are not going to hire hitmans.
The more likely concern is that someone will sell you out to any of the numerous governments who feel you wronged them. Leading to decades of life in prison.
It's not so much the projects themselves who are a threat, but the thousands (?) of random individuals whose value is stolen.
Just like a bug in a smart lock does not allow you to enter a house because "you were allowed in".
I am not making a judgement about this specific case.
Here's a simplified hypothetical example to help you understand the legal nuance: I offer all of my money to the first person that can solve 5x5, and I errantly believe that it's a difficult problem to solve.