What I see on-screen of UI for the Beta looked like some spaghetti code put together by a teenager making his first lines of software code. Not something that should have been the result of 3+ years of coding by hundreds of professionals in a $5B company...
Even if they are lazy and may have used same code and same UI for both the new gen and last gen consoles, then we all know that in both BF4 and also in aka BFV this looked super sharp and crisp. So no. There is no excuse for such sloppiness.
There were so many misconceptions and terrible designs in the Beta, that we can only seriously doubt if those designers and programmers ever played a game previously themselves? Let alone tried to run the code themselves, that they had been sitting and fiddling with now for 3+ years...