I can't say I agree with his reasoning
More here“The short story is, I quit,” Seeley explained in an interview with Newsarama. “The long story is when Marvel hired me, I had just written ten years of a horror comic starring a female lead so I seemed like a good fit. So we threw around ideas of doing Blade’s daughter and when they announced it, Marvel was in a weird place because they had announced the hip-hop covers and a lot of people saw ‘here’s another black lead with an all-white creative team’ and you know it’s valid and definitely the case.”
Seeley agrees the criticism was justified, and not entirely unexpected, but Marvel worked with him to find a path forward. “After a while, I felt like it was me screwing this up. I couldn’t help but feel like a black woman might write this stuff better than me and saved them from me. In the wake of ‘Black Panther’ launching so well, maybe ‘Blade’ is the book they find new talent on.”