Nas gave Dave East a legitimate career in rap. Nas' cosign alone changed his life. Nas shouted him out on 27 summers for a reason. They collaborated on several tracks. And dudes still question why East wasn't on his last 6 albums, as if Nas hasn't done enough already? When East signed to Def Jam, he became Def Jam's responsibility.
And IF there is beef with HitBoy, how can anyone even assume whose fault it was?
But if dudes want to go there, Hit has a few missteps. Dude brought in clowns around Nas. Quentin Miller had dudes questioning Nas' pen. That's because HitBoy brought that dude in. Even introducing Nas to that clown Fivio. Nas and his team, not Hitboy, are the ones that have to deal with all that noise.
By all indications, Nas is a cool dude. Like Big Hit said, the Nas you see is who he is. A solid, cool dude.