Yes, absolutely. That is one downside to this approach (and there are more). Even though you are moving the data to the calculations, I would still contend that

Yes, absolutely. That is one downside to this approach (and there are more). Even though you are moving the data to the calculations, I would still contend that this approach can be as efficient, if not more efficient, depending on how well your app layer is scaled. However, this is the challenge of designing software, weighing the pros and cons and making the best decision based on your situation.