The "oddly satisfying" category is nothing new to YouTube. However, the things that "oddly satisfy" some humans is ever-evolving. Take for instance, this video of a man unclogging a lakeside culvert, that has garnered lots of attention on Reddit...
The video was published on April 9th and already has 606 thousand views! Or perhaps you prefer a smaller body of water to be drained, like this guy unclogging a storm drain, that has nearly 45 thousand views on YouTube...
A lot of these videos are from user post 10 on YouTube, a special man with an affinity for flowing water. He's really a Super Hero of sorts.
Generally the response to these videos is "I don't know why, but it's relaxing to watch." Here's to relaxation