To me, it's all about his flow.. It's very predictable and it stays the same throughout most of the songs.. The hook before the chorus on 'Dip' is almost identical to the one on 'Kush Coma'.. He hardly switches it up. I do enjoy Old, as I like Danny Brown, and feel like this is his best release. But his vocal patterns are pretty simplistic and not as sophisticated as other rappers.
I can see how you would come to that conclusion. Some of his vocal patterns and rhyme schemes are the same, but his word play usually makes up for the couple parts that lack.