The rationale is something like this: AI tools will eventually handle a lot of the grunt work involved in protecting computer systems, like automatically scanning files for suspicious behavior and writing summaries of its findings. Therefore, there will be less work for humans and possibly layoffs.

https://www.msn.com/en-us/money/technology/amazon-s-security-chief-says-he-would-be-astonished-if-cybersecurity-professionals-are-laid-off-due-to-ai/ar-BB1llvHV