IMO, Burger King is one of the few if not the ONLY fast food joint that for for the most part, IS exactly the same as I remember from my 1980's High School days.
The original Chicken sandwich is exactly the same with the exception in the 80's the chicken sandwich was wrapped twice and cut in half. The Whopper is exactly the same, the fries do change every decade or so but the onion rings are the same now as the 80's.
Contrast, Wendys in the 70's featured commercials that were all about napkins and how juicy the burgers were but juicy translates to fats and a Wendys burger beef of today is not what I would call juicy as I assume the saturated fats are now much less and fats = taste.
Many years ago McD's changed from ice cream to frozen yogurt and the fried apple pies became baked apple pies.
But Burger Kings still rocks, notice next time you are at a Burger King during a busy time the entire parking lot will be filled with glorious smoke from those flame broiled burgers like a back yard BBQ! However, in my area Burger Kings still taste great but the locations are BAD, not clean and the employees are BAD too.
We did get a brand new nice Burger King but from day one had staffing issue. One day everything is fine, next day note on the door dining room closed drive thru only staff shortage, This became the norm and then CLOSED with-in a year.