These days I,eat some bread, but irregularly and small portions.
I kept bread in my diet at lunchtime, when newly diagnosed, and didn't have too many issues with it; that is, I had less than a 2.5 rise at the +2 hour point, but stopped eating it, as my OH developed a form of excema, which was considered to be dietary based. The non-artisan bread here is quite yellow, so we reckon it probably has some corn flour in it, but without making enquiries with the baker, it's hard to find these things out. By comparison, the UK is a dream location for readily available nutritional information.
I restarted, a little early last month, almost by accident. We were eating out and I was ravenous. I chose chill, which this particular bistro served with sourdough bread. It comes with 2 thin-ish slices, but I usually only manage one, because the chilli portion is very generous. So, again, I am eating it alongside a meal with fat in it, and sour cream on top. I've had this 3 times now and never had a rise of more that 0.3 at +2 hours, or later. I've similarly had a couple of demi-baguette slices with aioli, as an taster. As a garlic lover it was divine, although I didn't manage the bread with my main that night. I haven't gone back an looked at my blood scores, in this context, relating to this period in particular, but I should really.
I've never gone a low as you, carb-wise, and almost always have raw rolled oats at breakfast, which along with the wheat bran I add, and semi-skimmed milk is 26g. I have always had a bit of something at the back of my mind about the body forgetting how to cope with carbs.
Whilst I hear loud and clearly what you are saying about continuing to eat something that doesn't agree with us, I don't believe it's an all or nothing situation. I believe if i gave up, say, fat, then had a heavily fat laden meal, I would know about it. Or, for that matter, giving up alcohol for x amount of time, then being giddy one one glass of fizz.
I guess some of it comes down to where we are on moderation, compromise, and ease of day to day living, alongside others.
I don't don't believe my diet will ever be re-normalised, in a non-diabetic sense, but it am quite a social person and would like to be able to eat out with friends, and have a few more menu choices, without being labelled the food-nutter at the end of the table.