I disagree strongly with this change.
From a purely emotional perspective the stars are part of the EZA brand for me. To lose them means giving up a major part of its identity, and that's a bummer.
But it also doesn't even make sense within the context of their explanation.
This is not a site that reviews bad games. We will never, ever see a game rated 5 or less. So what's the point of making the scale bigger?
Further, numerical scales always invite comparison in a way that stars do not. reviews will always fall apart when you start comparing them, especially across different reviewers.
This must be due to some outdated notion that Metacritic in any way provides visibility. It doesn't. Think of other sites on the same strata as EZA - how many use 20 point scoring scale? How many score games at all? Not Kinda Funny Games. Not Giant Bomb.
You're removing something that makes EZA unique and replacing it with something that has no benefits. It's impossible to be happy with that.