Wouldn't the same be true of the many retail jobs out there that never guarantee Saturdays off?
Yes and?
Most of those retail jobs also keep you an hour or more under full-time status to deny benefits coverage because it's more profitable that way. Not much a standard of behavior to model.
fabricated outrage. There is no reason why a "go for it" startup wouldn't be honest about the hours they want to get out of employees. You don't have to work here. It's not always a conspiracy.