I really only do two things differently with foundationless frames (angled top bars) or starter strips. One is to bait up a new box with a fully drawn comb (brood is nice) and the other is to handle the frame carefully until it's attached on the botom or sides. This is a simple matter of not trying to turn the comb flatways but letting it naturally suspend down from the top bar at all times.
Other than that, it frees you from wires, sagging foundation, that you have with wax, and the poor acceptance you have with plastic. So I would say it is simpler. If you use foundationless or small cell starter strips, it also solves the whole cell size problem without overcomplicating it.
On the other hand if the beginner throws an empty box on top of a hive (without baiting up) and the bees decide to cross comb it all, it is a real mess for a beginner to deal with. If the beginner turns the comb sideways and it falls off or, worse, it collapses later in the hive because of being abused, then that is another mess.
But as long as they follow those two rules (bait up a new box with a fully drawn comb and don't turn a comb sideways), and they aren't that hard to follow, then I would say it is simpler.