That isn't true. Even at the a1c level CDC oddly expresses concern about, fewer than 5 percent of people will go on to develop diabetes - in their lifetime. That is not clinically relevant and if it is not clinically relevant it is as pointless and shamanistic as a doctor telling every patient to eat less salt. It may help a few people but most will just be annoyed by bland food.
Obesity is overwhelmingly the cause of type 2 diabetes but claiming everyone overweight has the same "increased risk" is not just bad science, it is even bad epidemiology - and in modern times that field basically exists to scare people about supernatural levels of chemicals or help write miracle food books.
Population data doesn't help individuals at all, unless you happen to be the average in the epidemiology claim. And since the average man has fewer than two testicles while the average woman has fewer than two breasts, you know most are not in that group.
The rationale in marketing groups is always that they need to shock people into action - except that doesn't work. The problem with CDC manufacturing hype about a prediabetes epidemic starting during the Obama administration was that either people would stop listening to the CDC - not a bad strategy, especially given how they botched COVID-19 - or want to go on medication. The US is the most over-medicated country in the world despite having only 5 percent of the population. America loves science, so embracing medicine is expected, but it is bizarre that groups evangelize pretend worries when they know the outcomes will be medication people don't need.
Advocacy thinks it scares people into action, but it does not. We have a culture where celebrities take ozempic as a crash diet tool, people are going to do that rather than diet and exercise more when press releases claim a third of them are otherwise doomed.