I feel like non-professional vibe coders are scapegoated too often. I'm a professional software engineer with extensive experience in CI/CD pipelines. And I heap on 30x more stress on GitHub than I did before AI-powered development took over - because (1) I'm much more efficient and running many development tasks in parallel, and (2) CI runs are one of my tools for ensuring that quality doesn't degrade with velocity.
I think that even if you stripped out non-professional vibe coders from the equation - the problem is still there, and will keep compounding.