Should cable elevators be used?


I read the dictums from Mapleshade and others that speaker cables should be lifted off carpets of synthetic material.
I always had wool carpets but in retirement have moved to a condo covered in synthetic berber,can't say I have noyiced any great change in my 12ft MIT or ZU speaker cables .
What's the general consensus?
schubert
Cables should be off the floor no matter what surface because of vibrations and static.
Some 'guru' on facebook, while showing off his 'reference' Marantz system, said cables should be off the floor to eliminate interference from THE EARTH!! I think it's all that molten iron sloshing around in the core. This planet is not audiophile friendly.