The problem is, this all quickly adds up to a lot of money and most people will just end up in the situation of thinking - there's no way I can support everyone I should, so I won't support anyone.
I wonder if there's room for a better way of doing things. Maybe a way to make micropayments actually work?
What if you could pay whatever your budget is each year (maybe even a couple of dollars) and then allocate proportions of that to the people you want to support?
Maybe this could be adjusted over the year and topped up - not sure how all the maths would work. But it would let you just say - I've got $10 for the year to spend - as I find people I want to support I'll add them to my list.
That's also a lot on my mind. The issue here is transaction fees and taxes. People keep calling it "donations", but essentially they are income for the artists and should be taxed as such. Commercial platforms and payment providers get a way-too-big cut from donations, imho, so I think the only way to make this somehow commercially viable is if artists unite under some low-profit organisation which keeps a low part of the donations just to keep lights on and redistributes the rest to their members. Bank transfers in the EU are cheap, but recipients often don't want to publish their bank account numbers, so there's an extra "privacy" tax.