Yep. I don't see how this will help change things at all. This is just making every game an "x.0" on the old scale.
The problem it seeks to address is that of internet discourse being driven by the difference between two games, in two different genres, reviewed by two different people, getting a score .3 points apart and it being used for endless fanboy debate about which exclusive is better.
This happens a lot. And for IGN it detracts from the hard editorial work they do.
Now a hypothetical fanboy looks at both of these reviews sees both with an 8 and then would actually have to fully read both reviews (or watch the video review) to understand the qualitative differences between two games, I think this is a correct move.
Though I think they should've gone the whole way a five or six point scale would be ideal because to be honest we could all probably categorise releases into a 6 point scale and come to the pretty much identical answers. It would highlight the quality of a game broadly with differences between two games being pronounced enough to be truly meaningful from the score alone.