@pavel @KernelRecipes At the LPC CVE BoF, in a room filled with people who care deeply about this topic, there appeared to be consensus that the CNA has traded many false negatives for a few false positives. (I.e. we are now closer to the imagined objective reality of a 1:1 mapping between fixes and CVEs.)
In the past, with distros and researchers mostly causing the CVE assignments, the implied threat model was that of a distro, and didn't represent other models. (But still missed fixes.)