OK I'll bite.
I think this was a genuinely awful scenario and no one really did anything wrong.
R6 guy had no chance, there's no way to predict animal movement, especially not when you have less than 1-2 seconds to react. Even having watched the video multiple times and KNOWING what is about to happen, I can count about 1.5 seconds or less between when the dog appears on screen and when the dog hits the R6 front tire.
DRZ guy could have done better but you can't expect everyone that rides a motorcycle to be really good at it. Who knows what that guy's skill level is. He had about 500ms to react and panicked, a very reasonable response.
In my mind, these are the types of freak accidents, that as motorcyclists, we just have to accept might happen and there's nothing beyond having years of experience that can save us, so we wear our gear and cross our fingers.