I've been putting up with them for years and they still slow me down to a crawl. If you have to do anything except for the most common actions, it takes forever to hunt through the ribbon to find what you want. I curse them regularly.
I don’t know I think they are sorted fairly well and I use all the actions somewhat regularly. That’s for Excel and PowerPoint at least, no idea about Word but Word is just a poor piece of software ribbon or no ribbon.