My basic take is: if "CVE stuffing" bothers you, really the only available solution is to stop being bothered by it, because the incentives don't exist to prevent it. People submitting bogus or marginal CVEs are going to keep doing that, and CNAs aren't staffed and funded to serve as the world's vulnerability arbiters, and even if they were, people competent to serve in that role have better things to do.
The problem is the misconception ordinary users have about what CVEs are; the abuses are just a symptom.