Idk, perhaps he's in denial, nah but you are right he must acknowledge that his dad was one of the pioneer culture vultures in hiphop.and you think Lil Eazy isnt aware of this dude was ceo for a minute of ruthless so im sure he knows the history.
However I think it might be too sensitive, either that or they don't think he has it.. It takes experience and on to play someone on their deathbed suffering from HIV.
Another theory could be that he witnessed it and has his own vision of how it went down, while F Gary Gray is trying to make it work in a movie.