This is the exact reason why Steam had a separate “recent reviews” statistic. A well-reviewed game with negative recent reviews is a good indicator that something broke (three exact reason should be spelled out in the reviews).
The only issue is that such reviews are not “self-cleaning” once the issue gets fixed, and not every negative reviewer will remove or correct their review manually.
I will argue that Witcher 3 did not have enough content for it’s own world. Don’t get me wrong, the content was great, but there’s large swathes of emptiness inbetween. The devs tried to fill it with map markers that got repetitive very quickly (hello, random floating barrels).
IMO, downscaling the world to 75% size and reducing the amount of non-quest content would have made the game better.