I'd rate myself as a 75th percentile developer. My career success comes from crossing the functional map: add decent code to good product design, and you've got serious impact.
A year ago, I could only write code that I could, myself, imagine or make sense of.
Today, the ceiling on my coding skills is whatever I can come up with alongside #ChatGPT.
That is a vastly different ceiling. The evidence shows up for me constantly, as I tackle more ambitious projects and finish them more reliably.