The threat is real, the hype is the danger.
This an important distinction cause having to say that quantum can break Bitcoin can make it to sound like every Bitcoin wallet it immediately at risk, the biggest concern is when public key is being exposed, and quantum computer powerful enough can use it to work towards recovering the private key. So whether quantum computers will become powerful it not the only real Issue. This can be a practical threat if weather Bitcoin can upgrade it cryptography. The technology itself doesn’t automatically mean Bitcoin is finished, if there be enough time to move to quantum resistant methods.