I think what it does for getting people moving in the real world is commendable, and I've been hoping, wishing, that games would move toward this direction for years. There have been other examples of this but nothing has really hit hard enough or stuck long enough to be interesting. PoGo finally feels like a keystone. It's got a lot of issues but Sterling's "barely a game" is not even a remotely applicable criticism. There are rules, mechanics to play with, opponents to challenge, goals to complete. Of course it's a game.To be fair, 5/10 is perfectly average. Which honestly, this game is. Once they fix the server and bug issues and add in some more content, it will get better.
What makes it a great game now is not the game itself but the phenomenon it has caused and the social interactions it enables.
It still deserves criticism for how janky it all feels, but it's deluded to accuse it of not having a solid foundation to build on.