Was writing code ever the bottleneck for anyone other than raw juniors and non-programmers?

One thing the AI tools have taught me is that it hasn't been my personal bottleneck for at least a very long time. It's made that part faster for me, and that allows me to take bigger bites at the apple each iteration, but it's not meaningfully speeding me up in the way people claim.

Depends on your company. I'd say very rarely, and never for long.