The franchises are in Texas, Illinois, Massachusetts, Colorado, California, New Jersey & Canada to name a few. You may be hearing an advertisement for your area/state. It is a different one in my state
No, they are across America. DQ specifically changed the ending so Texas people would like it. Some companies have a certain flavor or type of something only available in one region, so maybe the commercial was for a specific toe of ice cream?
I dare each and every one of you to see if you can watch...on YouTube...the Dairy Queen flame thrower burger commercials...and NOT LAUGH...Dare...Double dog dare...See if you can watch those clips and not laugh. I laughed my fanny off.