Bold claims that writing code was never the bottleneck. It may not be the only bottleneck but we conveniently move goal posts now that there is a more convenient mechanism and our profession is under threat.
our profession is under threat.
For very small projects, code may be the main bottleneck. Just to write the code is what takes most of the time. Adding code faster can accelerate development.
For larger projects, design, integration, testing, feature discovery, architecture, bug fixing, etc. takes most of the time. Adding code faster may slow down development and create conflicts between teams.
Discussing without a common context makes no sense in this situation.
So, depending on your industry and the size of the projects that you have worked on one thing or the other may be true.
If an activity (getting code into source files) used to take up <50% of the time of programmers, then removing that bottleneck cannot even double the throughput of the process. This is not taking into account non-programmer roles involved in software development. This is akin to Amdahl's law when we talk about the benefits of parallelism.
I made no argument with regard to threat to the profession, and I make none here.