>Bitcoin can be hampered but not outright killed, at least not over night. A death by a thousand cuts is the most likely solution but by no means guarantees Victory.

Ignoring policy attacks, and focusing on the purely technical:

A useful metric here is to compare the cost of executing a 51% attack on Bitcoin long enough to erode confidence in the software to the military budget of the top nation states.

Additionally, the broadly assumed consistency properties of Proof-of-Work cryptocurrencies fall apart in the face of a powerful network adversary who can cause arbitrary segmentation.