Detractors of AI are often accused of moving the goalposts, but I think your comment is guilty of the same. Before Claude Code, we had Cursor, Github Copilot, and more. Each of these was purportedly revolutionizing software engineering.
Further, the core claim for AI coding is that it lets you ship code 10x or 100x faster. So why do we need to wait years to see the result? Shouldn't there be an explosion in every type of software imaginable?
What's sauce for the goose is sauce for the gander. If you make that argument that 'I don't believe in kinks or discontinuities in code release due to AI, because so many AI coding systems have come out incrementally since 2020', then OP does provide strong evidence for an AI acceleration - the smooth exponential!