Apparently you did not read the article. The piece describes how different tests results can be interpreted to make a reasonable determination of a threshold.
The A1C has been used as a reliable indicator by my doctor as a reinforcing factor. This piece now reverses the order. The A1C becomes primary with the sugar level as a solid backup.
Think about this: The HbA1C can be “fooled” by semi-balanced highs and lows. The test is a measure of control, not variation. To me, diabetes is characterized by the variation in sugar levels.
I’m not a doctor, just a diabetic engineer. BUt I can’t say I agree with this push (much the same as I still disagree with the fundamental redefinition of the “diabetes” blood glucose ranges several years ago).