Agree, but I think the actual location is the biggest factor. If the restaurant is in a dumpy city (or dumpy area of a city) with lazy and entitled employees, it's more likely to be neglected. We recently visited a Raising Cane's in south St. Louis. The trash was overflowing and every single table was filthy. And most of the "employees" on duty were standing around playing with their phones. We had similar experiences at local Steak and Shakes, Wendy's, etc. Kind of gave up on fast food in the area because the rotten service and filth were everywhere.It mostly depends on the manager at the individual location.
Compare those experiences to a South Texas Whataburger: friendly and courteous employees and managers = a clean and pleasant experience where one may enjoy the best burger and service in the fast-food business.