That’s just how legalese is written. It’s like variables in programming they tell you what the thing is and then they tell you what they’re going to call it for the rest of the document.
I guess it originally saved them hand writing “B&H Film, Video and Television Media Production LLC” every time. Of course these days you could just do a fine and a replace, so I’m not sure why they don’t, but it’s just become standard lawyer at this point.