regarding bitcoin: civil war in the mightiest empire of history will create chaos. I don't know what degree of chaos will help the price of bitcoin, but if it is enough chaos the internet and magic internet money will not be the important things. food and ammo will be important. I don't think that the world has to collapse in order for bitcoin to shine. I rather have our civilization survive without civil war, martial law and shit like that.
Whatever happens we'll still need the internet!
That's one of the reasons why the coronapocalypse has been good for bitcoin: internet infrastructure remains unaffected, yet people are trapped inside, fearful of germs and human contact. Nothing better to do than figure out how to use bitcoin. Seems like a lot of people did just that.
Without internet, however, you basically own zero bitcoins or its equivalent in fiat. So whatever end-of-days scenario people want to envision I hope it includes functioning internet.