There is nothing wrong with tradeoffs. There is everything wrong with violating an agreed-upon abstraction while pretending that you are not. There is nothing

There is nothing wrong with tradeoffs. There is everything wrong with violating an agreed-upon abstraction while pretending that you are not. There is nothing wrong with selling RAM where certain access patterns corrupt the content in predictable ways. There is everything wrong though with selling that RAM for use in systems that are known to expect RAM to return exactly the bits written to it with a certain (high) degree of reliability. And it is wrong precisely because it is not a tradeoff. If you are honest about the properties of the RAM you are selling, then that is the basis for the system designer to make a decision whether using your RAM with an appropriate interface is a better choice than using more reliable RAM with a "traditional interface". Pretending that your RAM is suitable for the "traditional interface" is what prevents the tradeoff from happening and is essentially fraudulent.