It's a much more subtle force saying something along the lines of, 'You really shouldn't be bothered to do this. This is really boring.' Why? Why shouldn't I be bothered, and where does this voice come from?
Which is to say that other people's vanity projects are actually not a good platform for anyone (whether creative, entrepreneur, labourer, etc.) to be working for free because what is the motivation to work if not to be paid?