No problems with the role miners play.

I'm curious if a well-funded bad actor, say a nation-state, could flood the mempool with high-fee transactions to disrupt "normal" usage.

If I understand correctly. perhaps creating many many transaction of huge file sizes (videos, high res image files, etc.). With the ill-intent of slowing down (or making prohibitively expensive) the network for all other users.

Wondering what would prevent this from happening

BTCExecutor

Do you consider paying miners for valid transactions, not taking money from anyone, not double spending or anything like that, to be an attack?

$100 transaction fees are an expected norm of on-chain transactions. That's why there's so much L2 building going on.

bitcoin

Are transaction fees a vulnerable attack vector?

Do you consider paying miners for valid transactions, not taking money from anyone, not double spending or anything like that, to be an attack?

$100 transaction fees are an expected norm of on-chain transactions. That's why there's so much L2 building going on.