Certification is generally binary, though - you're either certified or you're not. This might be a good thing though, as it establishes a decent floor for technical competency and can save everyone from having to deal with at least some of the technical interview nonsense.

What some of the people in these comments seem to want though is some sort of standardized score/ranking system, which I suspect might lead to even more nightmarish outcomes than the current leetcode-y interview processes. (e.g. Employers setting absurdly high cutoff scores, choosing one applicant over another because simply because they scored a couple points higher, applicants grinding unimaginable amounts of unpaid hours to bump up their scores a bit, etc.)