Now, to be clear... No I can't be clear, because I have no idea what Patreon actually did, or why. Patreon has now moved away from this apparently? And I guess no longer bundles for newer campaigns?
When I think about how breathtakingly complicated their bookkeeping must be – two major funding models, by month and by work, plus various variations like annual memberships and pay at the start of the month versus pay at the end of the month, needing to keep track of when during a month a patron pledges or changes their pledge for reckoning by work pledges, plus they now somehow support merch payments? and also apparently they have two different approaches to handling payment processing depending on the age of the creator's campaign, one that deducts and bundles, one that adds and is unbundled – this is one of the things I'm thinking about, when, as I said to a commenter, I think maybe Patreon bit off more than it could chew, technologically speaking.