As a counterpoint, sloppy projects are being shared all over and it’s basically spam at this point. Even /r/rust had to disallow code projects, because there was simply way too much slop being posted all the time.
People share projects because back in the day, a project with hundreds of thousands of lines of code with a cool website and a lot of features were evidence of a lot of hard work, a lot of design decisions and a lot of tradeoffs.
Vibe coding has made that a bad metric. These things no longer mean that any actual work has been dedicated to this project. Anyone could use an afternoon prompting an agent to build the same thing. There is no value in sharing such a thing. At best, it’s worthless and at worst, it’s borderline a scam, an attempt at disguising a project as something it isn’t.