There are no demi-gods here. Only some skilled developers, who have nothing to do with how Haiku is funded, and a very small group of volunteers trying to keep Haiku, inc running.
The Haiku, inc website has a way to setup recurring donations through either paypal or amazon payments (http://haiku-inc.org/donations.html). They also allow you to donate through Flattr and of course you can also setup an automated transfer from your bank (well, at least I can do so from mine).
If you look at Patreon more closely, you will see that it is not a donation platform. It is a crowdfunding platform, which works a little differently. Basically, it allows donators a behind-the-scene access or other special rewards. And, they also take 5% of the amount you donate for themselves.
Is that 5% fee and the effort to create rewards contents worth it? I don't know, maybe. But you don't have to convince me anyway, you have to convince the people running Haiku, inc.