I inspect a lot of restaurants for insurance purposes and using the same spatula for flipping burgers is the least of my concerns. The front of the house may look clean and sanitary but you get to the kitchen and see what it looks like would make you never want to eat there.
How about the employee wearing gloves going to the cash register grabbing change and bills with a gloved hand and then going back and handling food. Going to the restroom to see an employee coming out of the stall and not washing their hands? Gloved employee handling raw chicken then grabbing a piece of beef with the same gloved hand? You think if a piece of food drops on the floor it gets thrown out if no one is looking?
In my book there is a lot more exposure to food handling before it hits the grill than using the same spatula all day. At least the food on the grill is being treated to some high temps to kill nasty stuff
We don't eat out very much. I know how my food is prepared and cooked.