Well, thanks for your comprehensive response. I agree with most of them. Although I doubt if they try to imprison people who own bitcoin.
This is not a theoretical future event, its already the case that people have placed in prison for using or mining bitcoin. I read this was the case in Venezuela though it could be misinformation, I think its quite likely as the government has a giant fiscal deficit thanks to low oil price and is making up the difference in new money. Also there is precedent in similar cases of a government struggling to maintain its monopoly over transactional currency, inflation is a form of tax not understood by populations. The USA devaluation of gold was a form of taxation, it formed the start of big government spending as the biggest benefactor was the largest holder of gold which is US gov at that time
Now BTC which is not held or controlled is a natural opposition to currency controls as we saw in China also
Palladium is mostly related to Car exhaust usage as a fume filter so it is industrial and also mostly mined in Russia. Silver is also industrial and a bi-product of lead and other metals mined. Only gold is fairly unique in its usage as precious metal only