While that's great and all, for me at least it doesn't justify why I should send them money every month.
I think the Open Source model needs to evolve, and if these people want monthly income, they should be "showing their work" a lot more. Put out a regular (weekly or more often) YouTube or blog series. Maybe stream your work on Twitch (like I do :) ). Provide some active community involvement. Then I would be far more inclined to donate to someone, rather than having to wonder all the time if I'm paying for them to work on this stuff, or if I'm paying them so they can go on an extra vacation next year for work they completed years ago and have mostly ignored since then.