> Problem solving keeps your brain strong.

Coding is not the sole problem solving skill. In fact, coding may be one of the easier skills much of the time. Deciding what to build, where to focus efforts, understanding a customer's needs, could all be just as if not more challenging than the coding part.

Also what the code should do and how it should do it. LLMs regularly cannot come up with the best way to approach something. Once those decisions are made, codifying them is kind of the least interesting part of the entire exercise.