This criticism is what is wrong with critics. This criticism is really just trying to tell you how much the critic knows about its subject to the point of thinking that the critic is actually more important than the subject.
This critic is a bit of an arse.
If you don't like the album, fine. You don't like it. Nobody can argue with you for that. But Collins' 'vocal stylings' (a phrase I don't think anyone has used since the compere of 'New Faces' in 1977) are a matter of taste, not decency. And on a purely technical level he is far, far better singer than Peter Gabriel ever was (a fact that Gabriel would probably happily concede), he is just different: poppier, yes, but God knows Genesis needed to be poppier after all that Prog Rog let's change time signatures till we disappear up our own essential orifices nonsense.
It is better than the subsequent live albums and it is also much, much better than Genesis Live. It is a wonderful record and if you really think that anyone other than you has ever heard Steve Hackett hit a wrong note (and can even be bothered to work out that it is Hackett playing it and not Rutherford for most of us neither know nor care: it just sounds nice) then I think you are sorely mistaken.
My guess is that you are either a) someone who thinks they should be writing for a Sunday broadsheet but can't get the gig or B) a lecturer in music at a minor university somewhere. Whatever, please, lighten up!