"OK I understand that people didn't like it when it was introduced, ..."
It was a shitty user interface when it was introduced and it will still be a shitty user interface in a thousand years.
(1) It eats up lots of screen space.
(2) It doesn't allow you to remove functions you don't need.
(3) All the stuff you don't need clutter the interface and make it hard to quickly find the stuff you actually need.
(4) The ribbon layout changes when you resize the window, making it even harder to find the stuff you need.
The useful part of the old menu system was that you could remove the 90% stuff you would not need. The result was a single, concise menu bar with everything you regularly use, easily accessible by a single mouse motion. They broke it. I still don't understand why.