No, they wanted to make them the same. It's just to give a blind person the same experience as a seeing person requires different things because they operate differently for obvious reasons. For example, a blind person can't see when an animation has finished. They expect that menu to be available once they've triggered it. However, seeing people see the dropdown appearing and then go to use it once it's ready.
> Don't try to be smart when it comes to accessibility.
In all seriousness, considering the state of accessibility as is, I think going outside the box isn't trying to be smart. It's actually being smart. The BBC frontend team is probably at the forefront of making high-traffic websites extremely usable.