[tbabej]

Have you tried donating to OSS through Github Sponsors? They act like a middleman (similar to Patreon), but take no fees (the also eat the CC processing fee), so the full amount being donated goes to the project.

This gets rid of the problem with multiple micro-payments, because all of your recurring donations are charged in bulk, once per billing cycle (monthly/yearly).

That said, not every project is on Github or has Github Sponsors feature enabled, but anecdotally the number seems to be growing over time.