Very true. Buy what you need and buy what you can afford. When the Libre was designed the primary constraint was cost because a meter will always be cheaper than a CGM. If a patient has their diabetes under control and only needs to test a few times a day that is great. The monthly cost of Libre sensor is, worst case, without reimbursement, is about $150/month. Cost of strips (FreeStyle) for a month at three to four tests a day is about $40. So, the cost to the patient to use a CGM is $110 more than strips. However, with reimbursement this drops, on average, to about $35 a month or less. One does not need a high paying tech job to afford a CGM. I have run into patients who will pay the extra per month simply because they don't like finger sticks. Others actually need to test more than three times a day and this can be a real difficult on one's fingers. The benefits of a CGM are the amount of data the systems acquire. A hundred or more samples per day. This gives the clinician a lot of more information about the state of the disease in a patient then taking a few data points per day. The CGM data is also time stamped so the doctor can see sugar level progression throughout the day. With the new systems (Libre 3 and G7) the data is available to the clinician real time because it can be sent through a smart phone daily. Also, a caregiver can access this data remotely to check for highs and lows. And for insulin users the CGM can detect a dangerous low before it becomes a problem.
I repeat, meters will cost less than a CGM. But the delta, overall, is not that much if the patient gets reimbursed. The advantages of a CGM, in most cases, outweigh the extra cost. This is why doctors are prescribing the CGMs for many diabetic patients. Anyway, if all you need or all you can afford is a meter, use a meter.