story
I've never been on a security-specific team, but it's always seemed to me that triggering a bug is, for the median issue, easier than fixing it, and I mentally extend that to security issues. This holds especially true if the "bug" is a question about "what is the correct behavior?", where the "current behavior of the system" is some emergent / underspecified consequence of how different features have evolved over time.
I know this is your career, so I'm wondering what I'm missing here.
As bugs get more complicated, that asymmetry has become less pronounced, but the complexity of the bugs (and their patches) is offset by the increased difficulty of exploiting them, which has become an art all its own.
LLMs sharply tilt that difficulty back to the defender.
Fixing vulnerable code is usually trivial.
In the physical world breaking things is usually easier.