Yes & you've just made precisely the correct point: "people expect".
People should understand what they're signing up for & manage their expectations accordingly.
No-one signed up to Patreon to buy a game, regardless of whether they thought they did, or not.
If they spent a bit of time understanding what they were actually doing with their money, instead of assuming what they're doing with it, they wouldn't get so irritated.
Key point of prev: "It never claimed to".
If they expect something they have no right to expect, it's not on anyone else, but them.
The Patreon system is not "flawed". It operates with exactly the same model as patrons have for centuries (as
Biscardone showed in his
post re. one of Da Vinci's patrons getting annoyed by him working at a snail's pace).