"Handling" i s sort of subjective .... what exactly do you mean? Can you quantify it? Can anyone show that a bike with a heavier fork does not "handle" as well as a bike with the same geometry as a lighter-forked bike? Dos this mean that no bike with a steel fork could ever "handle" well?
Some might think that "handling" is more a matter of frame geometry, and is here being used in an undefined way to support prejudices .... or so I imagine some might think .....