Dunkin donuts doesn't sell fresh donuts, their donuts today are nothing like the Dunkin donuts you ate in your childhood.
The donuts sold at Dunkin today were made weeks, months ago, likely in a commissary thousands of miles away from the retail store. These week/ months old donuts arrive to the store frozen, the donuts are thawed, then placed in a rack for display.
Well, that explains it.
When I went to school in Inglewood, CA there was the original Randy's a block away. Think of the huge donut on top of the shop, world famous. Tried it twice in four years and was not impressed. Now they have expanded and have 5 stores in Vegas. Must be the famous sign as the donuts aren't bad, but aren't anything to write home about.
During a quarter when I commuted, I'd roll into Inglewood at around 5:30 AM. Would stop by Duncan's a bit later for coffee and a delicious fresh donut or two. Then, they made good donuts, but that was early in the last millennium.
As a vet I've stopped by KK and Dunkin once a year for a free donut on Veteran's Day. KK are a guilty pleasure, but after about two bites of the fresh glazed wonder, the cloying sweet greasy disk becomes too much. Others are ok, but i find the high prices and tiny donuts not worth the effort. Duncan is now overpriced even when free, and I've given up on them.
Best donuts in the world, bar none, were Stan's in Westwood, CA. I only regret I discovered him late in life (actually my dear wife told me about the legend). He retired in '20 and passed away 2 years ago. Not sure if his named shops now in Chicago carry on the tradition.
If you are ever in Vegas, currently the best shop here is Ronalds.