A summary of the findings of a research project (using just 16 people with type 2 diabetes) which leads to the type of thing you've been reading:
https://blackdoctor.org/516677/eat-carbs-last-for-better-diabetes-control/
The actual study, as published in the British Medical Journal:
https://drc.bmj.com/content/5/1/e000440
As I read it, there does seem to be some evidence to support what's suggested in your post but further research is still needed before people with type 2 diabetes should change their dietary habits. (Quote: "The carbohydrate-last meal pattern may be an effective behavioral strategy to improve postprandial glucose control in patients with type 2 diabetes mellitus; feasibility and effectiveness need to be assessed in prospective studies").