I would agree that the physical act of obtaining a paper FP was very simple once a guest knew that he or she was eligible to use the system.
But, as we all know, being able to perform that physical act has very little to do with the more important value of FPs, which is using them in an effective way to enable a guest to better enjoy their time in the park.
So, maybe the relevant question isn't which FP system is physically "easier" for a first time or infrequent guest, but which is more "useful" to help that guest have a better experience. And, my opinion is that FP+ is more useful for these guests because it allows them to get FPs before they leave home for some attractions that they have identified as their first choices.
With paper FP, those guests had to try to round up FPs in the park while they were trying to familiarize themselves with the layout of the parks and the location of attractions, and then get the feel for how to be in the right place at the right time to both use the FP they had and claim the next one. And then they might have to change their plans on the fly if a return time for a FP didn't fit with other plans, like meals or taking a break from the parks.
It's just my opinion, but let's not pretend that using paper FP EFFECTIVELY was as simple as "insert ticket..take pass".