The YouTube income for most small creators get folded back into the channel. Getting a $100 check from YouTube isn’t going to pay your rent, but it makes purchasing some better lighting or a new microphone for the channel an easy choice, which in turn helps them grow and enjoy their hobby channel more.
The argument that the dollar amount is low and therefore it’s okay if we push it all the way to $0 is unconvincing for anyone familiar with how small time creators grow.