Some content is relatively cheap to produce, be it vlog format or whatever. And some creators don't care about compensation because they have existing revenue sources. But many creators do this full-time and depend on generating an income stream from their hard work. The rule of thumb is an hour of work per minute of video for many creators.
It is a matter of ethical consumption, which yes, you are not obligated to adhere to. But you should consider your consumption habits and review whether you are being fair to the people who work hard to inform or entertain you.