> The best engineers can visualize the whole architecture in their head, and describe exactly what they want to an AI

I'd go a step further and say the engineers who, unprompted, discover requirements and discuss their own designs with others have an even better time. You need to effectively communicate your thoughts to coding agents, but perhaps more crucially you need to fit your ever-growing backyard of responsibilities into the larger picture. Being that bridge requires a great level of confidence and clear-headedness and will be increasingly valued.