Indeed, assuming a very powerful attacker then limiting them to weird technical attacks is unimaginative.

'just have to catch some miners, gather them up on stage and shoot them in the head. (Or more realistically put them in prison). Don't hypothesize weird technical attacks when boring things will do.'

https://buildingbitcoin.org/bitcoin-dev/log-2012-05-17.html#l-642

Even outlaws don't have that much use for an outlaw currency. Actually destroying bitcoin would be very hard but depriving it of almost all of its value would be much easier for a major nation state attacker.  But why would people want to do such a thing? -- in general, they wouldn't.