It's not singularly responsible. It would have happened with or without it (the people responsible for Hip hop and house/Garage/Techno were incredibly resourceful making the the best of what they could lay their hands on)- but it would sound very very different. No 808 and whole genres like trap and electro probably wouldn't exist.
My argument is that because those genres would sound very very different without that machine that the 808 is singularly responsible for them sounding the precise way that they do. :)
