I think the fear is not that "bitcoin will be shut down" as in bitcoin will be over, it is more about being banned, if you have zero local exchanges and only way to trade bitcoin is p2p that would make things a bit harder, look at Iran for example they have been like that for a while and they are still not at the same price as the world, it's a bit more volatile there at all times, usually more expensive.

So, the fear is that governments can "shut down" bitcoin as in ban everything, even having it, and that's sort of shut down. I am not afraid of that because my country does support it, but I do understand people who are worried about it in their nations for places like Nigeria and India because they had talks like that and it might be true in the future. All other parts of your message I can agree with, even the picks for the coins as well.