Yes, there are risks with banks, central banks, and government backed currencies. These risks are well known and commonly hedged against, which is why currency trading is a thing.

Bitcoin also has risks; it could also collapse, have security vulnerabilities, you could lose access to your keys or if you choose to use an exchange it could be compromised or seized by authorities.

Now, it is true that the risks are different than for other currencies, but you can’t just act like bitcoin doesn’t have risks or that they are a priori less risky than other currencies.