I think it's similar the Math situation when Math was banned.
Smack is cool with Hitman in "real life" - I saw them chillin together in NYC after NOME 5. It was just Smack, Hitman and like two other dudes. Out of all the battle rappers Smack could kick it with, it happened to be Hitman.
But on the business side, I think URL booking hitman is not worth the investment, headaches, drama. They can take him or leave him. And the more he jacks up his asking price, the easier it is for him to not get booked. And rightfully so.