>The ones actually disliking it for a solid reason could even explain why

When a video’s got an especially terrible ratio, there’s a reason, and for tutorials it’s practically self-explanatory: “The tutorial doesn’t do the job/low in quality and people are not happy about it. Here’s how many people that had their time wasted telling you to avoid doing the same.”

And if you’re expecting pesky things like “expressing opinions into words”, don’t worry. The video creators can just turn the comments off too, then there’s no need to do so — makes things more convenient that way.