Sure, but you have to remember, not everyone is like you.
Some people are traveling for business and aren't interested in local flavor. Some people are on a budget and don't want to spend a lot on meals. There are any number of reasons why a visitor to Fort Worth would opt for something like McDonald's. And guess what? McD's would probably survive just fine based on the downtown office population.
I'm not everyone and do not pretend to be. "Viva la diferencia".
How you want to spend your time is your decision and everyone is entitle to their own interests or lack there of. I don't believe it has to come down to such personalizing.
Mixing visitors and the downtown office population is off message and are not the same, wouldn't you agree?
Traveling on business usually entails an expense account. Staying or eating Downtown is not usually for the budget minded person(s) on travel or on business. You want find much in quality on a small budget in Downtown.
McDonald's is just fine for fast food and people traveling through town to some other place; I stop at Buckee's on the way to Austin or San Antonio to grab a hot dog or a beverage; there are dozens of McD on the interstate for the same purpose.
I simply believe that as a preference for food choices that can exemplify Fort Worth from other places, I think a local food establishment does distinguish a city from the mundane, cookie cutter national chains.