No, this wasn't a little Cessna 172. This aircraft is a turboprop and likely has a glass cockpit. Still relatively simpler in terms of systems than most jets, but because it's a turbine it wouldn't be your first choice for someone inexperienced to take over.
Interestingly a big jet might be easier. It would likely be on autopilot and autothrottle when the novice took over. ATC would need to talk them through programming a diversion into FMS and some other systems stuff, but if there was an airport nearby with good weather and a suitable ILS, and nothing failed, they could set up an autoland and never have to actually handle the aircraft themselves.
Interestingly a big jet might be easier. It would likely be on autopilot and autothrottle when the novice took over. ATC would need to talk them through programming a diversion into FMS and some other systems stuff, but if there was an airport nearby with good weather and a suitable ILS, and nothing failed, they could set up an autoland and never have to actually handle the aircraft themselves.