Natural attack that should be expected because of human action. Imagine a scenario where Bitcoin goes to millions (versus US piece of paper) and US (by acquiring it) lowers its debt substantially - creating a longer period of sideways action, sellers, and further centralization on exchanges because of people using the fiat derivative verus Bitcoin. Imminent default risk would also go away for USD which would also create complacency by making it not seem urgent anymore. That, along with a well orchestrated attack on layer 1 that included the perceived risk of a price (in usd) correction by holders would likely convince many to side with large holders (who would be influenced by Gov)

Against this scenario is growing number of people deep down the rabbit hole, the global adoption of Bitcoin in self custody, more node operators who watch for risks like this, the use of bitcoin as a medium of exchange……setting up a likely (at some point) hard fork and a repeat of the blocksize wars where those trying to cheat the protocol by using their influence or power get wiped out by people protecting its security and decentralization.

Hope that helps.