Heat is the variable that doesn't care what year your house was built. This area sits in a severe-heat climate band, and that punishes nylon rollers, dries out lubricant, and shortens the working life of opener belts and plastic drive gears regardless of whether the door is from 1980 or 2004. On a newer door, the steel and the spring tension are usually fine - the failure point is almost always the moving plastic and rubber parts baking in a hot garage for a decade straight.
One honest limit: if a spring or opener part is genuinely obsolete for a given installation, we'd rather tell you that and talk replacement than stretch a repair that won't hold. That call is easier to make here than on the older streets nearby, since most El Mirage doors are still running hardware that's in current production.