One of my "let's try out this vibecoding thing" toy projects was a custom programming language. At the time, I felt like it was my design, which I iterated on through collaborative conversations with Claude.
Then I saw someone's Show HN post for their own vibecoded programming language project, and many of the feature bullet points were the same. Maybe it was partly coincidence (all modern PLs have a fair bit of overlap), but it really gave me pause, and I mostly lost interest in the project after that.
Thats the thing about a normalization system, it is going to normalize outputs because its not built to output uniqueness, its to winnow uniqueness to a baseline. That is good in some instances, assuming that baseline is correct, but it also closes the aperture of human expression.