Because it got 7/10 average review scores and didn’t sell as well as GTA. Then GTA3 (and its immediate spin-offs and eventual sequels) came out and started breaking all time sales records. So retroactively, GTA 2 was “a mistake” for not being GTA 3 two years early.

But like the guy says, the point of the article even, is that you don’t create run away successes without experimenting on the formula to find what’s good, without “failures” like GTA 2 to learn from.