I don’t think you understood my point.
It is a lot easier to arrest and lock up the prominent bitcoin users than to manipulate the market. Like it was pointed out, a market is not just a single currency, it can be a lot of different types of currency and goods. Trying to manipulate one end or the other would be difficult. It is better to just get the people - fear of being arrested is much more effective than trying to shake up confidence in the currency.
Destroying a large amount of currency just causes deflation and makes the remaining currency that much more desirable - imagine if you had a pallet of gold bars in your garage and nobody else did.
Maybe you don’t agree with my assessment of the situation but what you posted was far from constructive.
In response to your original post, I don’t believe the situation you describe is a big risk.