LOL who gives a fuck.
I don't really care about the Proof/Hailie lyrics (although obviously it's wrong), but Eminem has been a cunt in the past dissing the deceased and loads of fucked up references, so whatever. What goes around, comes around. If you can't take it, don't dish it out.
But like I say it doesn't really matter anyway. This 'song' will get 100k views on YouTube max, and 85% of those views will be Stans saying "fuck off, Eminem is the best rapper ever" highest rated comments, 600 thumbs up blah