IMHO that "career building" part of it was always a bit problematic because of the incentives it could add.

Instead of "here's some small bits of code you might find useful" or "let me share my approach", the personal glory building style of OSS construction can and has tended towards "behold my framework" and a brand, and often even a VC etc funded entity to go with it.

I don't love LLMs just conjuring half-assed things into existence, but I've also been burned too many times by someone else's frameworkization of something that should just be a small modular bit, or part of a standard library. Languages like Rust that have exempted a lot from their standard library that frankly should be there suffer from this the most.