He lost it
I'm the biggest Mel Brooks fan. His obvious movie peak was the late 60s up to early 80s. Prime peak obviously mid 70s. He started to fade somewhere in the mid 80s.
Like athletes I beleive film makers can lose it. Look at depalma, Coppola , Oliver stone and even Spielberg. (Not Scorsese tho) ...
This Dracula movie was so depressing. Omg. Horrible. Many are saying it's not bad but you have to understand the standards. I saw it in a theater and people were walking out. Very sad