I LOVE the Flight Stream.
I do, too. I would rather have a FS plus GNS than a new touch screen GPS.
I have posted before where my ride had an old style II Morrow GPS (which replaced a LORAN). It was a good unit, but I didn't like the Click click click Click click ad nauseum. So I sprung for a 530W. I assumed that in the many years between the GX55 and the 530, someone would have come up with a better way of entering data. Imagine my surprise.
Gary's plane had a FS, and he did a video on using it. As soon as I saw that video, I was sold.
The reason I made the conclusion about this guy that I did was because using the FS, I could almost keep up with the reroute on the video without writing it down. If I thought that I was going to hear "Cleared as filed," I might not have had paper on hand. I have an Apple pencil, but that doesn't really do anything more for me than a cheap ball point pen with the rubber tip. That way I can write on my iPad or paper with the same item, which is always at hand. I use Rod Machado's rubber band trick, so it is truly "at hand."
Not saying the guy's response is correct, but I can understand how someone can get caught in his position. After the clearance issue, he just lost SA, and that resulted in the incursion. As I said earlier, the controller did him no favors.