It's his choice to do what he wants, of course. I was just reading his full explanation for it in the WON and while you could question a lot or even most of his logic, there is a consistency there. The challenge I think he'll face is that a better match can come along, particularly with so many people of the current generation producing matches at that level that are still so young. If there's a better match next year, then what? What if there's a better one after that? And then another? I think in his mind, great! He doesn't draw a line. So be it.
It's as much a commentary on star ratings in general as it is Dave's approach to them. I've used them for years myself, but the limitations have become more apparent to me, to where it's baffling as a long time fan hearing complaints that a match "only" got ****1/2 or ****3/4. If we start hearing that about ***** matches, wow. But when he intentionally has no historical compass in matches, the ratings become useless.
The reason people care so much is that the WON is the closest thing to a "paper of record" that pro wrestling has. It will live longer than Dave or any of us. It will eventually be not that someone had a match rated seven stars in the WON, but simply that they had a seven-star match. I noticed when he did the Misawa and Kobashi bios over the last decade that he (and more interestingly, Bryan Alvarez in deference) did not say that they'd had "22 matches rated ***** in the WON". They simply said, presented as fact, that they'd had "22 ***** matches".
When an opinion or viewpoint is prevalent and unchallenged enough, time turns it into a fact. See current debates about the very existence of climate change being a matter of opinion. It's either happening or it's not, regardless of what those opinions are, but we've socially constructed the idea that it's an opinion. It's not so much about what Dave likes and dislikes as it is that he's made it much harder for future fans to understand the era when compared to previous eras. Wrestling changes, life goes on, yes to all of that, but now it seems like the matches in the past didn't get a fair shake from Dave, the most high-profile match critic in wrestling. People rely on those to determine what they prioritize in their viewing and it has a huge impact on consensus. That's why people care, not so much because they disagree with Dave on how good a match is.