McD's burgers are like having Budweiser/Bud Light beer (or Starbucks coffee if you don't drink alcohol). The product is just okay --- sometimes even good --- but it's unbelievably consistent. A Bud Light/Starbucks iced latte in the mountains will taste exactly the same as a Bud Light/Starbucks iced latte on the beach.
I love burgers and have had many all over the US; I wouldn't turn down a McD's burger.
Probably more of the measure of the Deluxe burger, which if fresh doesn't seem to have any faults for a burger. Now the little McFrankinstines leave much to be desired.
Some of the best burgers I've ever had came from fast food.