Ask HN: Why advertise “no experience in X technology required” but not mean it?

I've seen phrases like 'A passion for learning and an interest in Go (previous experience isn’t required), along with a “right tool for the job” mentality' only to then be rejected for lack of Go experience. The whole experience is a complete waste of everyone's time. It's pretty ludicrous.

I've now made it a rule to completely ignore this phrase and assume they require the technology, but why do companies do it, and has anyone ever got a job without the experience in the technology they want?