[closeparen]

Personal projects can give signal about someone's interests, level of investment, sense of adventure, etc. They're also often an explicit relief valve from "dotting the Is and crossing the Ts" at work, so not a great way to assess professional/production code quality.

If I see a tower of inscrutable Haskell on someone's Github, that is a great thing: both that they have the urge to do it, and the good sense to scratch that itch away from the company's codebase.