Are you telling me that you don't think the NSA could destroy Bitcoin right now if it wanted to? I hope you aren't this naive. You don't really think they spend $80,000 on a toilet seat and $50,000 on a hammer now do you?
It has become easier to destroy a PoW coin now. Because of mining contracts. Also a script kiddy can rent a botnet for a hour and attempt a 51% attack.