I found this survey and article amusing.
What I found most entertaining is the following quote from the “expert” they interviewed: "Assuming the engine is running when the pilot becomes incapacitated, and the throttle is set to maintain flight, a properly trimmed airplane will fly itself,…” This person gave away their lack of experience in any big airplane when she said “the” engine. I looked her up on the FAA’s website and she does not hold any type ratings, so she might be an expert, but an expert on small airplanes.
Now granted, the article and survey did not specify what size airplanes they were talking about, so I will give some leeway there. I can assure you that the average person would very much struggle to land any aircraft, no matter how large or small it is.