The bitcoin ads are going to be related to something you have been searching for, investigating, visiting. I'm not seeing bitcoin ads anywhere. The ads I see are mostly about home improvement, which isn't surprising given the time I spend investigating tools and the like.
Ultimately anything that isn't in your hand can be remotely confiscated. Bank accounts are little more than a number on a ledger that can disappear with the stroke of a pen. Bitcoin can be more or less vaporised in an instant, should the need arise. Even paper currency can be devalued, as seen by the number of times hyperinflation has reared its ugly head in the last century or so alone.
If you really want something that ticks the boxes to qualify as money and has stood the test of time you come back to precious metals. The trouble with precious metals is that if you keep them in your house they are vulnerable to robbers and if you keep them in a secure box at the bank they are vulnerable to confiscation. Most people lack the means (and, frankly, the inclination) to explore options whereby gold is held in trust in a neutral country. Even then, it could be made all but impossible to cash in an investment if incoming international wire transfers were either blocked or heavily taxed.
