For the record I buy your argument about "vibe-coded malware"; this cycle of hype has been running since 1995 and Nowhere Man's "Virus Creation Lab". I am however fixated on the impact LLMs will have on vulnerability research, and what that will do to the ecosystem.
100% agree on the impact of it on research. It's pretty obvious that it'll accelerate 0day discovery but standard defense in depth strategies prepare you for 0day vulns against your org.
It will be extremely interesting to see how vulnerability discovery evolves with LLMs but the whole "sky is falling hide your kids" hype cycle is ludicrous.