As a MCU fan I very much disagree with that idea. Lot of fans respect the past.
Sorry, then. Maybe I've been hanging around way too many of the bad Disney/Marvel fans on Tumblr that waste their times shipping gay pairings and throwing venomous statements about how only the MCU does superheroes right.
To get back to the movie, I liked how there were so many allusions to Batman lore at large. I spotted The Killing Joke, The Dark Knight Returns and Batman 1989 as inspirations for certain plot points.
One thing I find that was completely blown out of the water was the violence, the scenes out of context are no more terrifying than your average gore feast you find in an R-rated horror film.