The stars have fallen to the classic problem of becoming a goal and stopping being a good metric. This can apply to your measure just as well: issues can also be gamed to be opened, closed and responded to quickly, especially now with LLMs.
If the number of stars are in the thousands, tens of thousands, or hundreds of thousands, that might correlate with a serious project. But that should be visible by real, costly activity such as issues, PRs, discussion and activity.
It is the meaning of having dozens or hundreds of stars that is undermined by the practice described at the linked post.
(This was for admissions iirc - they had limited slots and a portion of them were allocated to people with a strong github rank.)
This sort of bot punishes users for making even valid reports that aren't fixed immediately or missed by the maintainers for whatever reason including transitory ones, etc.
Constantly bumping threads/issues/whatever is generally considered rude, so this is why issue reporters generally don't do it, plus generally the reporter isn't solely focused on that particular issue