It's the same challenge writers always face when working within an established format: Keep things dynamic and expanding without violating the artistic integrity of the core concept.
That's exactly what they have
done. But from your past comments, it seems you're more concerned with preserving the superficial details, objecting to any change in them even if the core is still there.
Nope, just the opposite. As I keep repeating, turning the butler into an action hero is pandering. Let the butler be the butler.