Ok, but so what? Why do you think Bitcoin would protect you? Why wouldn't you purchase assets of any sort with money as you receive it? That's the whole point of inflation - to incentivize the purchase of productive assets.
Anything could happen at any time. But I don't live my life with a pile of weapons, canned peaches and ammo. That's prepper talk.
We have no idea what a hypothetical apocalyptic failed state America looks like. There's no guarantees that there won't be a single entity with more than 50% of the hash power. There's no guarantee that the internet will be up. There's so many things that have to go exactly right to think we'll be trading spreadsheet cells in the apocalypse.