I really REALLY don't get TB's hate on this one, for the simple reason that he knows it will happen because it ALWAYS happens when he puts official trailers from big name publishers in the podcast, it happens to Ubisoft ones, to some activision ones, to some square enix ones, and he whines about it on twitter every single time.
Oddly he said a while back that he was going to stop using trailers on the podcast because this happens, so hes obviously gone back on that.
And the reason for this is that they are all content matched to stop people reuploading the trailers and monetizing it to get free cash, as some idiots do.
All he has to do is use the YouTube system, you get a flag, you contend it NOT by saying that you own the rights (assume people try) but that its fair use, that you are not doing the original material any disservice and have made it a transformation work and ping its gets sorted.
I don't think Nintendo are flagging gameplay, just trailers tbh. I have my own channel, did a lets play of DmC and started one of Wonderful 101, neither monetized due to lack of partnership with Polaris etc. DmC gets flagged due to the cutscenes mainly yet the wonderful 101 gameplay, that has the start and the prologue etc, not flagged [edit] Its the full prologue and the first level as well so if it was going to to get flagged, it should have been by now
Long and short of it is, this happens all the time, all companies put there trailers into the content ID system to stop people just re-uploading and making money, he doesn't need to be such a man child and throw insults around to people trying to debate with him so much every time it happens.
Going off of what you've said, as I am certainly ignorant of how the process works in the back end, then I believe it is still perfectly reasonable to have a bad opinion on Nintendo about this. If it is the owner's (Nintendo's) decision on what to have done in this scenario, then it's on them. I also believe that Polaris didn't want to deal with disputing because it's easier and quicker to just take the video down and edit the trailer out, but I don't know this for sure.
Content ID is automatic, they likely put it on the trailer which is sensible and no reason to have a bad opinion of Nintendo because there probably wasn't a decision made on this video done by anything other than a computer.
It's a fucking trailer - an ad. There's literally zero to be gained monetarily for their podcast by using it (no one watches it in order to watch a promotional trailer) and there's literally not a thing lost for Nintendo. It's free advertising, nothing less, nothing more. You know, that stuff companies pay millions upon millions of dollars for?.
The issue is that idiots take said trailer, upload it to there own channel , make zero changes and enable monitization. So companies have to put there trailers into the content id system to stop that, which is a legit thing. It causes some cases like the one here where changes have been made to get flagged because it detects the video, which is what the dispute system is for, and we don't know if he even bothered to use it.