2004 Ford F-150 Front Rotor

I have a 2004, F-150, 4X2 Supercrew Lariat, 5.4 V-8, 4-wheel anti-lock brakes. The vehicle has 90,000 miles. I tires replaced and while the truck was up on the lift I looked at the brake rotors and pads. The rotors and pads had normal wear but I knew that pads would need replacement within the next 10,000 miles. I asked the auto shop, a nation wide business that does tires, batteries, brakes, front-end alignments, and lube services, to measure the wear on the rotors. I was told that the rear rotors could be turned when I replaced the pads, but the front rotors on the truck cannot be turned because the wheel bearing are a sealed part of the rotor so when I replace the pads I would have to have new brake rotors installed. Is this true that the front rotors on 2004 F-150 trucks cannot be turned if there is normal wear and the thickness is within the limits?