At least for the next few months, if I’m reading the FAQ correctly. For right now creators are being compensated for people using their free tokens to read Kindle Vella stories (like, say, THE STARS ARE WRONG); and the payout is… rather higher than I was expecting. Enough that I’m going through my Patreon short stories to find ones that I haven’t otherwise made available for free, or put in a chapbook.
If you’re an author and have any kind of audience, I suggest you consider doing the same. At least until July 2022.