I am not 100% sure what you object to, in your comment.
For instance, my son recently spent 2 weeks in Costa Rica, in 90F+ temperatures every day, in places where it takes several hours to find a pharmacy, and where we did not have a car. When my wife stopped at a pharmacy, she found out that they had 1 5x cartridges box of Lantus and no fast-acting insulin. I am really glad that (a) I spent weeks testing how to preserve insulin at reasonable temperature while on the go and (b) we planned carrying lots of insulin supplies, broken up in several batches.
In Canada last Xmas, we also accidentally forgot the bulk of our insulin supplies in a fridge 5 hours from where we were. There again, we were very pleased to have carefully planned the fact that we carried insulin supplies in several batches. Of course, in Canada it would not have been hard to replace the insulin. A Dexcom PDM broke down while in Canada, so we were glad to have two (on top of 2 iphones).
Last summer, in a week-long kayaking trip away from everything, we lost almost everything electronic, and our primary BG meter, despite all of our planning! So we were left, after one week, with one BG meter—if it had failed we would have had to go full Jedi.
So, based on our limited experience traveling with diabetes so far, my personal conclusion is that it does require a lot of careful planning to be able to be unlimited in some places. I don’t see why being ready to do a lot of planning is an issue, if this is what you object to.
Another example: it is impossible to get Dexcom equipment shipped away from your home country. The only way to do that is to get them shipped somewhere in the US (if the US is your home), then have them trans-shipped by a friend over to where you are. Since they have to go through customs, it may take the trans-shipment up to 3 weeks to make it to where you are, in a country in Western Europe with good shipping. So, if you are unaware of these issues, or if you did not plan your supply logistics well enough, you may end up having to deal with less than optimal situations. We are ready to function without a Dexcom, but why should we if we can avoid it?
It can be worse than that. I was raised mostly in Africa and the South Pacific, in many places where the only reliable emergency health supplies were in the naval base where we were living. There were many people living in town hundreds of miles away, with no doctor in proximity. Clinics, when they existed, functioned with minimal hygiene if any. In anything, infrastructure in Africa has degraded since I lived there. Dealing with hard sicknesses for anyone can be difficult. For kids with diabetes, the BG consequences can obviously go south faster. So I don’t think that planning for the worst is bad.
Si vis pacem, pare bellum is the old saying: if you want peace, plan for war. I think this applies well to health: if you want to be healthy, plan for sickness As a parent, I have fiduciary responsibility for my kids’ health, and I feel compelled to be better prepared for conditions that would apply to them than for those that would apply to me.