What do you think Bitcoins biggest vulnerability is?
The only vulnerability I can think of is the restriction of government towards bitcoin that is why the transaction regarding with it is limited to those countries where crypto is available. This restrictions hold the bitcoin from being widely used across the world.
Yes the restrictions are the only vulnerability for bitcoin because the price fluctuation and volatility is the part of crypto world. I believe there are alternatives available to escape from the restrictions, on the other hand restriction will be there for all the crypto currency in those countries which does not entertain bitcoin so it's a collective issue which turn out to be vulnerable for the entire crypto market. True vulnerability is something which is created by whales wherein they can control the price to an extend.