Mh, I disagree.
Just because you like the product (that happened because of hard work, good ideas and the scrapping of bad ideas or implementations) so much that you’ll pay to support the creator(s)/maintainer(s) doesn’t mean you make for a good project manager.
That’s why donations/subscriptions are gestures of support, not the purchase of a service.
On topic: Rengo is a fringe feature for a fringe group. Even on servers that implemented the feature (KGS,IGS,VGS) it is not even remotely popular.