Just as a quick reply, none of my videos have been flagged yet, but it's a little unnerving for me to think I could wake up tomorrow and see a dozen or so videos of my flagged. I think they're targeting newer stuff; I could be wrong though.
I don't have a whole lot I can add to what's been already said on that Reddit post. I'm disappointed in Nintendo really; many Let's Players I see out there who focus primarily on Nintendo are some of the most enthusiastic Let's Players out there. Do you really want them to potentially shift to PC/other consoles when your Wii U is selling like crap?