Like I said, you say there's no evidence, I give you evidence, you say it's lousy writing like your opinion means a fucking thing.
I like the characters together. I think their dynamic is fun and wholesome. I think Genji enlightenment would make him more appreciative that she saved him. I think Angela feels partly responsible for apart of Overwatch's misdeeds, and Genji can reaffirm to her that she is better at preserving life than harming it.
You don't like the characters, and I can't do anything about that. Just like you can't do anything about the fact that the writers and voice actors like the pair.
But about fan art. It's not usually a good idea to let fan mad material influence your interpretation of the character, since you'll just be disappointed when canon goes against it. Further, the big reason Gency gets little fan art is because the OW fandom is full of A, SJW kids who think Gency is "heteronormative" and "toxic" and B, perverted Yurifags.
With that is close this discussion.