All the ancient Hebrew men including Jesus had a beard.
If mankind is to return to perfection in the new Kingdom order they will return to wearing beards such as Adam had.
The no beards policy came about the by the men who ran the WTS and was instilled to make its public sales representatives (JWS) look clean and righteous, like a car salesmen with short hair, a suit and an honest smile.
It was essentially a public image endeavor to make the organization look righteous and clean unlike the worldly religions that are not.