Are the two drummers (rhythym devils aside) at their best when it sounds like there's only one drummer?

Correct me if I'm wrong but I was listening to some later 80s show (think it was RFK '89) and for a moment they sounded like, as one reddit user said, tennis shoes in a dryer. I'm not a drummer so from a technical standpoint never understood the point of two drummers (again aside from the drums/space segment) and my favorite years are definitely '72-74.

So, I know this topic has been beaten to death but am I write in my question where two drummers aren't supposed to sound like two drummers cause the idea is that they're perfectly in sync?