I'm not sitting here saying you have to like it, I'm just saying it makes sense why it keeps happening and why it'll continue to happen because marvel hasn't established logical consistency with his powers. It's why fans can even sit here and talk about what powers they want Blade to have and back it up with on-panel stuff.
and yea, very disappointing ending, especially considering basically every other Avenger has a moment to shine. I feel like Aaron is trying to play a long game here, but sometimes his payoffs can be shallow.