Demetrios1453
Hero
Some people want WotC to release books that they are not releasing.
So they are taking it out on SCAG.
This.
It's perfectly fine for what it is. My players and myself have already gotten good use out of it in just the few weeks it's been out (races, classes, deity domains, etc.). A whole bunch of criticism out there is not because what it is, but what it's not, which is a bit unfair.
I do have to place a smidgen of blame on WotC for this though - had it been explained a bit more clearly what SCAG was ahead of time (Something like "New to D&D or the Forgotten Realms, coming back after a long absence, or just interested knowing some of the changes that have occurred in the setting in the new edition? The Sword Coast Adventurers' Guide will make a great introduction for the region for players and DMs alike!"), a lot of the criticism could have been preemptively blunted.