Maybe, but it's at least an agreed upon system and a centralized database and format, which can be improved since a org is behind it with the goal to make sec vul disclosure the best it can be. The wild west of marketing websites isn't advancing towards any sort of shared understanding.
I am 100% on board with free and easy assignment of CVEs and a central database of them. I just don't think they are a good place for keeping vulnerability details, because it is too rigid. Having a link to relevant details is good enough, and if the link happens to just include everything in it then I'm fine with that.
