If anything, testing/TDD is a bigger share compared to coding than before. LLMs can write tests too, but it's still something that has to be managed.

It meshes with my experience. Coding was never the bottleneck. Understanding what the customer/business wanted or needed was always the vast majority of the time spent on a project. A developer might not have seen that, depending how the organization worked. If you got specs from a manager you might not have been aware that those were 6 months in the making. If most of what you experienced was writing code then that could feel like the bottleneck especially if your manager demanded frequent status reports.