Not too long ago, Nintendo finally reversed their decision to try and monetize all YouTube videos that featured their games. At one point in history, if your YouTube video featured even a second of gameplay or audio from a Nintendo game, Nintendo would swoop in to claim the video. Thankfully those days are over, but recent happenings might point to Nintendo still aiming to control one area of content on YouTube.
A number of YouTube Channels that feature modding/homebrew have recently had their videos blocked, and Nintendo is being named as the reason. While Nintendo hasn't commented on it publicly, it appears they want to suppress videos that show their hardware being modded or altered in some way. It's clear Nintendo is doing this to try and stave off further interest and advancements in piracy, even if the person's video doesn't focus on that.
You can understand why Nintendo would want to squash any activity related to piracy. The problem is, Nintendo is also sweeping in homebrew here as well. Yes, homebrew can eventually take someone down the path of piracy, but homebrew in and of itself isn't wrong. Hopefully Nintendo will move away from their heavy-handed approach with this, but that might take quite some time.