In my head this was Ian Kung, but I can’t find it on his channel.
The creator was trying to make a point about how broken copyright enforcement is on YouTube by basically watching cool videos and “reacting” by saying the same thing after each one loosely tailored to the content. They were all based around the phrase “my wife” or something like that.
Like “wow, what a cute lazy dog. It’s almost as lazy as my wife,” “if you think that’s a big whale, you should meet my wife,” or something to that effect.
I think you may be referring to jjjacksfilms,
https://youtube.com/@jjjacksfilms/videos
Good guess, but no. This was a one-off style thing from a creator who doesn’t normally react. And the “reactions” were extremely low effort. Like they said virtually the same thing for every video.
They were so certain that it wasn’t going to work that part of the stunt was finding a sponsor who would actually sponsor the video. Ended up with some vpn.
I might be mixing up this last part with another video though.