VFR has got nothing to do with altitude. You can fly VFR in the US in most places at any altitude below 18,000 feet. Its premise is to remain clear of clouds.

VFR has got nothing to do with altitude. You can fly VFR in the US in most places at any altitude below 18,000 feet. Its premise is to remain clear of clouds. Radar following has very little in general to do with safely landing if you have an emergency. While they can advise you of nearby runways, a significant part of the pilot's job is maintaining situational awareness, which includes knowing the nearby points to land at. Being near a controlled airport has got nothing to do with safely landing an aircraft, even during an engine out emergency. I don't understand why you conflate the loss of the engine to loss of radio. You have no idea how the aircraft is configured electrically.