Why wouldn't you post something just because you won't make a bunch of money off of it? Was that your entire goal with the video you made about the mic issue you had?
What's the reason you post comments here? Is someone paying you to do that? A lot of my favorite things online were put there by people who were just creating and sharing useful things with others because they were passionate and helpful. A few dollars a month would be a nice bonus, but most people will continue to contribute to the internet without any expectation of getting anything in their bank accounts for their time. Production values might suffer for it, but for most people uploading a video to youtube does not require a huge investment in time money and effort.
I love that people are able to create content and make money on youtube, but the idea that people should/have/will stop sharing with each other unless they're getting paid is strange. It's the people who most concern themselves with how much money they can make on youtube that end up flooding the internet with the worst output. That's how we got things like clickbait, homogenized content, algorithm gaming, the nightmarish videos on Youtube Kids etc.