UTC quotes the "Branch Correspondence Guidelines":
Without making rigid rules or getting involved in giving yes or no answers, elders should recommend what is appropriate dress and grooming by explaining Bible principles. (w77 3/1 149-50; w72 4/1 222-4) Draw attention to these, and encourage the brothers to make their decisions accordingly.
Translation: We (the local elders) do not make rules. However, we have "recommended" that wearing a beard is not "appropriate dress and grooming" and we have "explained" that to you using "Bible principles." We therefore "encourage" you to make your "decision accordingly": SHAVE IT OFF!
Note that the reference cited for "Bible principles" is NOT even to the Bible, but to two Watchtower magazines, one 40 years old, the other 45. These magazines are so old that it is unlikely that the majority of current JWs would have any possible way to read them and look up what they say. The jw.org website only has Watchtower magazines going back to the year 2000.
But we don't make rules and we only follow the Bible. Yeah, right!