I worry about the brain rot because, while I am not purely vibing, I am relying on Claude for most of my typing. I still routinely need to work those hard-earned brain muscles with what it produces; it's terrible at factoring things into components, I've seen it write SQL injection vulnerable code frequently, and it litters the code base with TODOs. If I were to describe it, it's extremely lazy - and you constantly have to remind it to do the work, do it correctly, and course correct it when it's making bad long term decisions.

If I end up brain rotting I am seriously concerned about the quality of code that I will be producing.

But I do agree with the core of your argument. Code is a tool, one that I don't mind replacing.