Yes, and we didn't need AI to figure this out. Linux has been averaging ~500 security-relevant bugs per release since at least early 2024, before LLMs got any good at security research: https://social.kernel.org/notice/B9nU6wnmFvh5atXSG8. Now AI has pushed it to ~2000 per release, which is considerably higher, but at this point, does it make a difference?

There are plenty of design decisions that could fundamentally change things. But they're not being taken. What you're seeing is the revealed preference of this system: Security is important, but not enough to make people incur the cost of adopting major changes in pursuing it.