Bitcoin is dangerous and not dangerous depends on from which perspective you are going to judge.
For example:
If you think of safe payment then bitcoin is best if u also think of an investor then btc is a great option to make some onvestment to enjoy some spreads. As a btc user you will be manage your own money and can keep it personal with no any threat of getting it hacked. I node hash Secure transection make it less dangerous. And easy fast money transfer and highly liquidity makes it less dangerous.
But if we think of another point of view: we know btc which is powered by blockchain technology is a threat to conventional centralized money management system which we known as Bank or central Bank.
It is also can be misused for illegal dealings like arms and etc for untraceablity of its ownership. For ex ISIS , taleban and so on. For its securing the ownership in a very private way makes easy to do corruptions.
Now lets discuss the main part.is it risky in terms of the perspective investors then its dangerous for whom those who dont have any patience or dont have knowledge about btc or crpyto market. Otherwise..i will say btc is the safest or less dabgerous then other crypto currencies currently exits in the crypto world.
So invest with your own responsibly.
Cheerz