I think you're actually right to query "why bread?" Not everyone is able to eat higher carb food with impunity, and this should be kept in mind when offering (or reading!) dietary advice. And sometimes it's necessary to query things to make sure we're reading from the same page.
The original low carb diet was created well over a century ago (pre insulin and othe diabetic meds) to try to help diabetics manage their glucose levels via carbohydrate restriction. And there is a well documented and well defined list of high carbohydrate foods to be avoided. The diet is more about the type of carbs to eat or avoid, rather than the quantity, and I think (at least for many of us) this still holds true.
If someone makes an informed choice to eat a reduced carb diet and still eat high carb food then that shouldn't ever be an issue. But where a problem can arise is if they then decide to reinvent the standard low carb diet to fit their choices, and also begin to object if other members do keep to these standard recommendations and give what is actually correct advice or information. Such objections can at best result in biased or incorrect beliefs and cause further confusion to often already well confuddled new members, and at worst result in someone with serious carbohydrate intolerance choosing to eat the wrong types of food and possibly ending up with unpleasant complications.
Robbity
Isn't the problem in the label, rather than the act of eating bread?
If a person is eating sub-130 gr carb a day, they're eating LC, aren't they? To be honest, it is my personal view that it is far more important that new members learn how to manage their number into a better place, by self testing, and usually modifying their diet alongside. OK, that might involve giving up some higher carb foods, but if a member finds themselves able to eat bread, chips, or whatever, then fair play to them.
Many people seem to find that they have their own personal rocket fuel; whether that be grains, root veg, fruits. In my view sticking to a list is unimportant. The results of testing are important.
I think I'll rebrand my diet, Doris.
To be honest, if a person can eat bread and remain within their health targets, then who am I to complain? Surely we are all balancing our tolerances, attitude to risks and a wider family/community life?