Except they dont talk anymore, when was the last time Emiko talked to her brother....? They barely treat the character like she is a Green Arrow character. Everything they have build for Green Arrow, they just continue to take away anyway, giving to other franchises or deleting....I saw that Emiko looks to still be around in Titans, so there is always the chance he’s still around in the future. Plus for all we know he’s in one of the backup anthology stories, I could see him on Outsiders.
Why not, Dr Fate would be able to subdue him...I’m telling you now nothing good can come from leaving the infected Green Arrow with Doctor Fate, literally the only person keeping a barrier over the only safe spot on earth.