Generally, there's no advantage to substituting honey for sugar in a diabetes eating plan. Both honey and sugar will affect your blood sugar level. Honey is sweeter than granulated sugar, so you might use a smaller amount of honey for sugar in some recipes.

It is a very sensitive subject for one of the most important diseases of nowadays. It is not correct to comment before scientific data are clear.

Saudi J Biol Sci. 2017 Jul;24(5):1030-1033. doi: 10.1016/j.sjbs.2016.12.020. Epub 2017 Jan 11.

Honey and diabetes mellitus: Obstacles and challenges - Road to be repaired.

Meo SA, Ansari MJ, Sattar K, Chaudhary HU, Hajjar W, Alasiri S.

CONCLUSION:

"Honey decreases the fasting serum glucose, increases fasting C-peptide and 2-h postprandial C-peptide. Honey had low glycemic index and peak incremental index in diabetic patients. The use of honey in diabetic patients still has obstacles and challenges and needs more large sample sized, multi-center clinical controlled studies to reach better conclusions."

Both honey and refined sugar contain high amounts of carbohydrates. Indeed it has been shown that honey also has carbs in the form of glucose and fructose which are simple sugars found in processed ones. With respect to honey's usefulness as a proxy for processed sugar in diabetes, reports show that honey is better compared to refined sugar. Some studies indicate that switching from refined sugar to honey may help keep blood glucose levels down, reduce inflammatory markers and improve levels of cholesterol which are essential in the management of diabetes. In one of such studies, people fed with 75g of solution containing honey resulted in raised blood sugar and insulin levels in those with and without type 2 diabetes within 30 minutes with blood glucose of those using refined sugar being marginally higher than honey. After 2 hours, the blood sugar levels reduced, remaining lower in the honey group, compared with the refined sugar group. This suggest that honey may improve insulin levels, which is key in diabetes.

https://www.hindawi.com/journals/omcl/2018/4757893/

https://www.liebertpub.com/doi/abs/10.1089/109662004322984789%20

There are two more references from Pubmed, in below;

1-) Pharmacognosy Res. 2017 Apr-Jun;9(2):121-127. doi: 10.4103/0974-8490.204647.

Honey and Health: A Review of Recent Clinical Research.

Samarghandian S, Farkhondeh T, Samini F.

2-) J Diabetes Metab Disord. 2014 Jan 29;13(1):23. doi: 10.1186/2251-6581-13-23.

Effect of honey in diabetes mellitus: matters arising.

Erejuwa OO.

Generally, there's no advantage to substituting honey for sugar in a diabetes eating plan. Both honey and sugar will affect your blood sugar level. Honey is sweeter than granulated sugar, so you might use a smaller amount of honey for sugar in some recipes.

Interesting question

Reasonably small amount of natural honey is tasty and healthy.

It contain large quantity of sugar

https://foodwatch.com.au/blog/carbs-sugars-and-fibres/item/honey-is-it-healthier-than-sugar.html

https://www.bbcgoodfood.com/howto/guide/sugar-substitutes-honey-explained