I'm not at all surprised that the people in the youtube video had fuel related issues with their Suzuki as I have seen the same thing.
I have a 20hp 'zuki on our dinghy, I think it is a 2013, so it's not new but still pretty young. I've owned and run many, many outboards, so I'm pretty used to their little ways. We tend to use the 'zuki very hard for the month we spend each year on the boat in the Bahamas, then one or two other weekends a year. Other than that it just sits. I know that's tough on an outboard, but it's an unavoidable result of our life schedule, at least for now.
I try to mitigate the issues by always using non ethanol fuel and not keeping old fuel in the tank (I pour it into my truck after each trip). But there is not much you can do about the fuel that is in the injectors and the lines. My dealer told me NOT to run my motor dry, but to stabilize the fuel, so that's what I do. I have had three failures due to "bad" fuel. Two times the fuel came from the Bahamas, and likely had ethanol/water in it. The last incident wrecked the high pressure injector pump, which is a $500 part.
I hoped that the EFI motors would be more tolerant of fuel issues than the carburetor motors, but my 'zuki seems about the same as the other motors I've owned. Last year I installed a big racor spin off fuel filter with a clear bowl on the dinghy, the same filter I have in my flats boat for my 115 e-tec. It seems to have helped a lot but time will tell, I guess.
