mamba
Legend
it is different in many ways. When you join a patreon you do so to support the work of someone, not a giant company.How is that any different from any company or designer with a Patreon who gives early access as a benefit to supporters?
That frequently means you get access to the whole catalog by joining, here that would be everything WotC published on DDB.
You also get access to the beta and help shaping it, so the whole UA would have been done on DDB.
Finally you then get the finished product which also goes on sale. Usually that means you ended up paying more for it in patreon fees than the public will have to (unless you joined late while it was already far along, in which case it falls more into the access to the whole catalog bit).
You are ok with paying more because that ultimately is what patreon is about, to support someone so they can afford to work on something that you are interested in.
Does any of this sound like a DDB subscription?