Sure. While Multics was a wonderful operating system for folks who were into systems programming and similar activities, for those of us who were trying to write applications it was a nightmare. It was wonderfully flexible, but nearly impossible to understand from the application programmer's perspective. In reading the doc you'd find something you didn't understand so you'd followed the reference to the next piece of doc, and then on to the next and so on. After about 4 levels of this I'd have a headache and give up.
For all it's problems the IBM 360 was much more accessible. Initially, the doc was of little use, but by this time, IBM has its act together and there were some truly useful docs.
Multics, for all its brilliance, was nearly useless for many.