You are underestimating how destructively this can be utilized.

I did too. Transhumanism and AI was in many headlines a year or more ago and I casually dismissed it myself. I'm taking it more seriously now

Think about how dangerously a quantum computer can be in the hands of bad people. A computer that can brute force decrypt any kind of encryption. Suddenly all emails are hacked, everything online hacked, all bank accounts hacked. AI can imitate your voice, decrypt your passwords, imitate your face and mannerisms, your handwriting, your diction, imitate your patterns of behavior. Your fingerprint, social security number birthday everything is stored in a networked computer somewhere and a quantum computer can find it all in short time