Yes. As your edit said, this is actually a great video showing the geometric distortion. I added a new section in my writeup to include this video, and time marks demonstrating these issues 
Here is the writeup again, plus the new section of text:
An accidental YouTube video
User stekusteku at forums.flightsimulator.com pointed out a YouTube video posted by Home Sim Pilot. It highlighted his experience running MSFS 2020 on his excellent triple-monitor setup. His setup is a few hundred times better than mine.
This is the first video I am aware of, with an almost full-length flight showing both a real-time video camera capture of his triple monitors, as well as an in-game video capture of a similar/equivalent flight. By comparing the triple-monitor capture to the single-monitor capture, one can observe geometric distortions in real-time.
Jump to time 2:55, and look at the taxiway-meets-runway sign 29R-C on the right monitor. As the plane inches forward, the sign moves backward, becoming more and more elongated as it gets closer and closer to the edge of the right monitor. Keep in mind that his side monitors are perpendicular to the front monitor, unlike my lightly inclined setup. His video camera captures these side monitors already at a deep angle. And the video camera already compresses optically what you see on the two side monitors. Yet, the sign still becomes unnaturally elongated in the captured video. In real life, a pilot seating on the pilot will see an even more elongated sign.
The pilot himself said at time 5:30 that the major issue he was having with the screen was that, “there’s no multi-monitor support unlike in XPlane where you are able to control both the visual offset and the field of view for each monitor”. In MSFS 2020, at this initial launch time, one is forced to use Nvidia Surround.
At 9:51, he comments on how only the front monitor looks right. The two side monitors show stretched and distorted projections, at this time. He thinks that once MSFS fixes this issue, it will be a game changer.
During landing, at 14:20, buildings can be seen greatly distorted on the triple monitors. Compare what you see on these monitors to the external view on the single-monitor. At 14:55, look at the brown patch of grass on the right. On the single monitor, it looks diamond-shaped. On the triple monitors, it got stretched into a thin line which at one point spanned the entire right monitor.