Maybe I'm out of the loop, but is there anything wrong with donating to https://liberapay.com/matrixdotorg/ ? I'm assuming the connected github account (and twitter) mean that it is, at the very least, genuine, but I can't find a link to it elsewhere. Edit: Sorry, not sure where I was looking. There is a prominent link to liberapay on matrix.org.

Liberapay may not be as easy as Pateron, but especially with Patreon's UX getting worse over time, the major difference for me is now that you usually pay/renew each donation yearly.