It used to be very much a Japanese game developer mentality (Sony excluded) to strike or at last claim gameplay videos. SEGA used to pull this all the time two back in the day, and still do for certain elements of games, like cutscenes in certain games like Persona (Atlus is a subsidiary).
Nintendo just never stopped like you've articulated really well. They seem to hate that their most avid fans show how much love they have for their IPs.
The criteria listed by noirscape way above is well laid out, and it's not just game developer. Dojinshi, AI arts... It's the Japanese mindset. The bundles of bank notes left on the table are, just, notes. Sales is just someone else's business. Those are never the point.
If you call them first for a profit sharing scheme, only then sometimes some cares, but still it's more for the scheme.
SEGA literally DMCAed every single YouTube video of the original Shining Force to prevent people from comparing the original to the remake.
As in, they searched Shining Force and send DMCA strikes to every single video they could find. They only backtracked after they got a literal metric fuckton of negative press due to it.
It used to be very much a Japanese game developer mentality (Sony excluded) to strike or at last claim gameplay videos. SEGA used to pull this all the time two back in the day, and still do for certain elements of games, like cutscenes in certain games like Persona (Atlus is a subsidiary).
Nintendo just never stopped like you've articulated really well. They seem to hate that their most avid fans show how much love they have for their IPs.