Ask HN: How concrete is the risk from the BLASTPASS 0-day to the average person?

Seeing that Apple hasn't yet pushed security patches for iOS <= 15, I was wondering if users who aren't potential targets of large hacking organizations should still be worried? This is my case (some devices still on iOS 15) and I find this a bit unnerving. Are vulnerabilities like this one usually immediately exploitable by non-technical attackers? Or is there still a pretty large delay during which the exploit is still somewhat contained? Thank you