How is that an actual problem? What specific issue is raised by 0-59 being seen as failing? Its not equally failing, it provides feedback on the relative level of failure and the proximity to a passable score, so how is it worthless?
What would be the value of a scoring system where the difference between 1 and 2 is significant? What about 3 and 5? It doesn't matter. There is no benefit to any party.
The system as it is provides the necessary information. It isn't really worthless. You could have two totally shitty games, but one is at least playable, while the other is just a broken mess. You could honestly say, neither is worth your time, but at least one is playable. For the purpose of a consumer they are both equally unworthy of a purchase, but it still provides information regarding the nature of the failure.
Again, this is the system used for most things in life. Everything from how we rate teachers to doctors to stores and all products, work on basically the same scale. 5 out of 10 is unacceptable, and anything less is just another level of unacceptable.
IF you accept that there is a difference between 6 and 9 (you visibly do), there should also be a difference between 1 and 4.
In your system (A-F applied to a numerical score) there isn't, as EVERYTHING edges on being above 59 to not be considered a failure.
There is no inherent problem in the A-F ranking when the main problem is Pass/ No Pass, and when you want to quality the degree of Pass (from "barely", to "with honors").
There -is- a problem when you want to qualify every degree of quality, even in how bad things can get. Just as an example, a 4.5/10 game could be considered acceptable by die hard fans of one given genra (say giant Mech combat), who would be more than willing to accept to turn a blind eye to some glaring problems to get their fix.
Otoh, a 1/10, per example, would clearly indicate a game pratically broken beyond any hope. Maybe a 0 should also not be a taboo? (as in, broken at launch and unplayable in some aspects?).
So in short, the problem I see too often is that the A-F scale is used as applied to a decimal scoring, where it should not.
Either use the full 1-10 scoring range, or use the A-F scale (F meaning DO NOT PLAY THIS, and B, C & D indicating various levels of enjoyment, with finally A being "MUST OWN, WHOEVER YOU ARE").
Sorry for the partial OOT.