Kendrick is always gonna get acclaim, it's Kendrick...So we're gonna act like Sing About Me's verses didn't get acclaim within the last 5 years?
I agree that "classic" gets used way too much. I can't think of any singular verse that I'd call classic in recent memory.
But Sing About Me is actually one of the songs that I'd use to vouch for him. Thematically, Sing About Me is a great song cuz of the storytelling and how it was put together. The production, flow, imagery, and character development was well done.
That's what Kendrick is best at, vivid storytelling which does require lyrical skill but most of his bars never stick out.
He's about the whole picture which is good, but if I were to put his lyrics side by side with the example I gave of Hov's verse on SST, you can see the difference in skill level. Jay can say a whole lot more with less.