I dislike content for the sake of producing content. Reaction videos are one type for sure.
The other one I really dislike is when someone uses cheap animation to basically explain a wikipedia page on something with very little expertise on the topic, just a days worth of research. We get it, youtube's algorithm rewards animated book reports. And lastly there is this trend for videos on very obvious subject matters, and it seems like mostly millennial video publishers LOVE to take a 15 second explanation, and stretch it out with a flaky history lesson on whatever it is. It's not ONLY millennials, because a few others also do it and people click that shit all day long, just mostly. It's too bad, I used to think a few youtubers were good at showing off products.
ie: Did you know Super Mario Bros 2 in North America is just a modified Doki Doki Panic? *insert 5 minute history lesson on Doki Doki Panic*
We get it dude, you only have 30 seconds of content and two forced jokes to go along with your 10 minutes of generic animation.
Kids react to Doki Doki Panic. Here's a history lesson and fun little animation. Oh, and here is a slideshow and power point with robotic voices to read the slides in case you needed more help using the internet.