It really depends if this uploader got permission from the original artist because from what I know, an uploader can not get their videos monetized if what they uploaded was uploaded without permission your video might even get blocked if you get involved in copyright issues with the original artist
I think they're bypassing it, hiring people to create their own spin off remix of the original song. I believe that this is allowed in youtubes monetization policy.
That YouTube channel is really onto something, recycling the same tunes and scenes on different channels. It's kinda cool how they've figured out a formula that's making them money and getting loads of views. Once they did the initial work, it's like a smooth ride to online success! They've basically nailed the game of reusing their stuff with the same guy in the thumbnails, making it a brand people recognize. Smart move, less hassle, more views, and cash.
I may make another thread, counting all of the ways I've seen simple easy things or low effort get successful on YouTube.