You're conflating two systems here: CVSS' ratings and CVE's vulnerability IDing
Something receiving 9.8 when you feel like it should be a 4–5 is a common enough complaint, though typically not this extreme. If the parameters are filled in correctly (you didn't mention even checking why the result was 9.8) then that's not a flaw in the CVE system.
Conversely, CVE authorities not responding to requests for deletion aren't the same as using an inaccurate impact/exploitability calculation system called CVSS
Something receiving 9.8 when you feel like it should be a 4–5 is a common enough complaint, though typically not this extreme. If the parameters are filled in correctly (you didn't mention even checking why the result was 9.8) then that's not a flaw in the CVE system.
Conversely, CVE authorities not responding to requests for deletion aren't the same as using an inaccurate impact/exploitability calculation system called CVSS