From my experience the OT is not as “complex” (in the sense of complicated) as accounted for …
It’s just a question of taking some time to get acquainted with the various features. Nobody, I think, needs all of them directly after unboxing. The same is true for a software like Ableton.
Setting up the OT with other hardware is quite straight forward. As in a DAW you will find configuration menus, you have to set general and specific midi and audio settings, hook up your gear, check it, and go ahead … well, if its not the first time you do this, it should not take too much time. The settings can be saved too.