. . . and when you remove the front fender, all that water gets sprayed on the engine and up in the air . . . . and then lands on your face . . .
Since I ride in the rain as a matter of routine, I've no intention of cutting down or removing my fenders.
For the fair-weather-only folks, I don't believe fender removal would cause any real problems. You might put a cut-down piece of plastic fender under the saddle/behind the airbox, just to keep rocks and gravel from causing damage.