The moderators brought this question to my attention. While I don't think the action proposed in the question is productive, I do think it's worth talking about openly.
If I'm reading you correctly, you are concerned that the moderators are overriding the will of the people by ignoring the score on meta answers. As it happens, I had a similar concern several years ago when I was a moderator pro tempore. One particular response seems apt here:
Sometimes folks propose strategies that would break the entire site if followed... And they end up ranked highly because a lot of folks don't particularly like the site they're on, and wish it was the sort of site that gave away more free ice cream and less disemboweling criticism.
One of the reasons version tags are suspect is that they have the ability to break a site. To take the specific example of Drupal, it sounds as if Drupal 8 differs from Drupal 7 in myriad ways. There are currently 24,356 Drupal 7 questions. If, let's say, half of the answers to those questions are still valid with Drupal 8, that would mean the tag very misleading. People arriving at the site via a Google search, might be mislead into thinking that the answer to their question isn't on the site at all.
On the other hand, if most of the 7 questions are properly tagged, there's an impending problem with 8. What happens when Drupal 9 comes out? Will there need to be a retagging of old questions? It probably makes more sense to assume all questions apply to the latest version unless proven otherwise. In other words, 8 is premature.
I won't pretend to have all the answers; I have never used any version of Drupal, afterall. But I do know (from several years as a community manager and several years before that as a moderator) that this sort of community policy requires a bit of nuance and a lot of time. As far as I can tell, the policy proposed by the moderators is careful, conservative and constructive. They aren't suggesting Drupal Version Tags be eliminated. Instead, they are proposing a compromise: use the tags when necessary and edit them out when not. What's needed now is a bit of time to try it out and find what, if any, problems occur.