Such over-design tends to spectacularly and expensively fail as cars get older or get into accidents. With multiple hinges, sensors, control units that all could potentially fail, you will end up with a used car without functioning doors. Who wants that? On other hand, simple hinge just keep working.
So you think, "I will lease for 4 years, and will never see these problems". Well, resale value is affected by reliability, and as a result costs of these failures will be baked into your lease costs. So you will have higher monthly payments because some marketing type at Tesla decided to stick pointless lambo doors on this car, making it less reliable in the process.