Seems impractical to replace something as simple as fabricated clothing with an electrical device that might be susceptible to failure, leaving the subject bollock naked should it happen.
It's equally impractical to replace something as simple as prison bars with a forcefield device that might be susceptible to failure, or to replace something as simple as towing cable with a tractor beam that might be susceptible to failure, or to replace something as simple as wheels with a levitation system that might be susceptible to failure. It's a common conceit of science fiction to replace practical engineering with overcomplicated energy-based alternatives for the sake of seeming futuristic.
The more I read about GR - I've got to ask, does he write anything that doesn't involve sex, people taking their clothes off, having three breasts or hypersexuality?
You say that as though there were something wrong with it.
And it's not as if it was unique to GR. You ever read Larry Niven's Ringworld and other Known Space books? Nudism licenses on Earth, ritual interspecies sex as a Ringworld norm, etc. Plenty of '60s and '70s science fiction explored futures with more liberal sexuality than our own. It was an extrapolation from the Sexual Revolution of the time.