This is stupid lol, He is manipulating the flames of amaterasu, even the damn samurai said it when he first used blaze release, blaze release is simple manipulation of his MS abilities, every MS has varied abilities, Obito has space time migration while the eye kakashi got has Kamui, neither eye is capable of using amaterasu or tsukuyomi, Madara has only shown his Susanoo thus far and that is his main power.
Sasuke and Itachi share direct blood as brothers and now eyes, Yet Itachi's amaterasu and susanoo and tsukuyomi are polar opposites of sasukes, sasuke uses amaterasu more effectively then his brother who relied heavily on tsukuyomi and mastered it to a level far above sasukes own genjutsu abilities, manipulation of the black flames is not a second KG it is merely a variation on the KG granted by his only one, the sharingan.
Also your idea of proof that his eye didnt bleed, thats also invalid you can clearly see the eye strain itself similar to amaterasu but to a lesser extent because he is only manipulating them instead of creating them from his eye.
So stop saying everyone else is in denial, you brought no solid evidence at all.