You know what's truly deserving of
? Your lack of hip hop knowledge. And it proves what we've said time and time again: Kendrick fans have a cursory knowledge of this hip hop shyt. Which is why they give Kendrick props for stuff he shouldn't be getting props for.
You asked about rappers selling positivity? I just listed the major ones that outsold gangsta rappers by a lot. I'm not even touching the minor-in-comparison acts scattered across the hip hop landscape.
Since Jungle Brothers/De La/KRS kicked the 'positive' rap door open, there have been TONS of acts that have made money doing 'positive' rap (Coolio, A Tribe Called Quest, Common, Mos Def, Talib Kweli, Jurassic 5, etc). Some were amazing. Some were mediocre, and others were flat out trash.
Counterprogramming has always existed in media. The question isn't: 'is this positive?'
The real question is: 'forget the message for a sec...Is this good on its own merit?'