Originally Posted by
Harasar
Exactly because he is minor; people like me wouldn't notice the change. To me, if they didn't said it was a recast, I would have assumed what Ford is the first actor who would play Thunderbolt Ross, because I don't remember what he appeared in MCU before. My only thought about the choice was what Ford is too old, and they should have instead brought back Adrian Pasdar who played Ross in Agents of SHIELD. But as I already checked, he was actually playing another general - Glenn Talbot, not Thunderbolt Ross. But to me they are kind of the same, they are just representatives of military, nothing else, they are interchangeable.
Same goes for War Machine - his role was minor in first Iron Man, so I completely forgot about him and thought what the character was always played by Don Cheadle. I have only learned about it when the talks about recasting T'Challa started.