It would be a lesser evil rather than good.

This sort of thing was going to happen, with or without AI (state sponsored hackers, the US or China taking down systems they control, or whatever).

The later it happens, the more we will be down the path that lets it happen, and the worse the consequences. We are getting gradually worse consequences: AWS outages taking down websites, GCP outages taking down banks, attacks on fridges disrupting good supplies...

Its better for us to change path when something happens that causes dozens of people die rather than wait until its millions.