This ain't really surprising. Gnx has been by far the biggest album on the West since Doggystyle or 2001. We haven't heard an album getting played like this in the street since those albums. It captured wc hip hop perfectly, has its own signature sound, and every song is a hit.
I'm not mad at anyone ranking it its best album. At the end of the day, it all depends on your taste and we're discussing perfect albums with different sound made for different audiences. Everyone is gonna have a different #1 kendrick project.
My favorite Dot album is still TPAB, but GNX is slowly becoming a close second. I believe it has way more merits than any Kendrick album besides TPAB.