Yes, but the US diet is also incredibly high in sugar; for that reason I try to always get the “dressing” on the side (of salads) and then don’t eat it.
I don’t think it is anything to do with sugar, I think it is the diet change. Remember the end of “Super Size Me”, like the credits end, where he switched back to his previous diet and had the same effects as at the start.
That’s all without T1D.
I just got back from Costa Rica, a one week “adventure tour”; total tourism. The diet is total carbs; like Mexico with added carbs. Carbs are cheap. I went in knowing this was likely to happen (it happens in the UK, it happens in Europe, it happens in the US; carbs are cheap everywhere). It means barely eating, in terms of quantity, but that wasn’t a problem for me because the “adventure” part meant I was getting lots of exercise (intermittently) and that reduces my appetite. That doesn’t help with the diet change:
We got back, via Mexico City, yesterday, bought a Chicken in WalMart at the end of the drive back and I must have a weak stomach. This (according to my wife) was because I ate half a chicken and all the fat therein. She is probably right; I super-sized myself.
Best place to go for a T1D; the local markets. There’s no imperative to maximize profits because you can do that once then the customers never come again, choice is a requirement. Quite a lot of the world is T1 these days. You cater for Americans, serve carbs and demand tips, you cater for the people you see every day accommodate them, even if their requests are weird. How often do you go into a local restaurant, get a salad with the dressing on the side and sub the potatoes in the main course for veggies? I certainly never do anything else.
But it’s adaptation; I can do it in the UK (I’m a native) but it is a Royal PITA; finding somewhere in the UK with decent food is like finding water in the Sahara. Extreme selectivity is required and, in the UK, buying your own food from a supermarket and preparing it yourself is much safer. In California it is no problem; either on the side with subs or just go into a supermarket and see the world’s vegetables on display! In Taiwan, no problem; much more of the worlds vegetables and, in the markets, pick and choose, with sugar or without, cooked (as required) ready to eat. These are the three countries I am most familiar with (by a long shot); tourism is, I admit, a crapshoot.