It's not surprising if some counties say bitcoin is bring more harm than good. Since they're collapsing now.
My country a lot of times say to the public if bitcoin bring more harm, they just say it's really bad investment.
But I believe most country say it just to keep their people lost their money from bitcoin
You are right, the government is just trying to protect its people from harm. The government in my country also warns that bitcoin is a very high risk investment and the government does not bear all the harm from the impact it might cause. But, that does not mean we should be afraid, not every investment has a risk? all we need to do is understand the risks, and determine a safe investment strategy. That way the loss can be minimized.