I disagree. The rating is high because all of those old ratings still describe the tried-and-true old plex experience. There’s no other way to interpret that in reality.
Saying “because users didn’t change the ratings, it must be good” is poor logic. Perhaps that is what Plex’s leadership is doing, which would explain a lot.
If anything, the difference between the old and new is what needs to be examined. Go view the ratings, and sort by most recent. Compare those to the ratings in 2024. The problems with the new experience are glaringly obvious.