Please help me understand better, because it feels like part of the problem has already been solved. Specifically, I've been told that the independent journalists that I watch on YouTube Premium receive a portion of my subscription fee. Is that not a form of micropayments? The system seems to work well enough for videos. Isn't there some way to adapt that kind of system to other media?

The solution is called centralization by a middle man that takes a massive cut - eg YouTube Premium. Only Google makes real money off that, and the content creators rely on sponsors instead for their own revenue. So does it really work? I would despise a future where we solve micro transactions by giving up control to yet-another unnecessary body. Especially not even at the level of Visa or Mastercard, despite how much I dislike crypto.