You're right, the truth is probably actually that only a minority of T1Ds have CGMs. My post was a bit insensitive, not everyone has easy access to them.
What's even more frustrating is the disparity in who can get them and how even if they are cleared for use in your country. The author here points out that New Zealand's medical system doesn't always pay for CGMs, while the Australian system does. In Ireland, the Dexcom G6 system is available but the FreeStyle Libre 2, an updated version of the FreeStyle Libre with more frequent reads and better alarms (Libre vs Libre 2), is not.
CGMs are available over-the-counter, just like finger stick machines, in a variety of countries like Canada and Ireland. But in the United States a prescription is required for any CGM even if insurance doesn't pay for it and insurance generally only pays for it once you are actively on full-time insulin treatment, so type-2 diabetics can't avail of insurance to reduce the cost of potentially not needing to go on recurring insulin by getting a handle on being pre-diabetic. (Plus many doctors won't write a CGM Rx for someone who isn't type-1 or very symptomatic type-2. This has resulted in nutritionist businesses springing up whose purpose is to turn a credit card charge into a prescription for a CGM.)
But of course different countries have different regulatory systems, we all know that. This is to say that even when you find a system and method that has worked for others in your online community, that method might not be available to you, and it causes even more stress to have the idea, right or wrong, that a useful tool is just out of your grasp. And carbohydrates help you if you dare move between countries.
I was really surprised how difficult it is for competitors like levels to provide CGMs in the US.
Here in Europe we can simply get them from Abbot/Dexcom an ship them.
I can't make any promises, but I'm positive that I'll be able to develop a product that takes care of finding the correct insulin doses when giving activity and CGM data + meal information withing the next year's.