If a guy dresses as a "metrosexual" just going down to the local Piggly-Wiggly to pick up a case of PBR...
That's funny as hell... though somewhat mixed up. I imagine a guy who goes to the Piggly-Wiggly to pick up a case of PBR is going to be dressed more like the guys from Florida Georgia Line than a 'metrosexual'. Your 'metrosexual' types are going to Whole Foods or Trader Joe's and purchasing a case of Pinot Grigio
But, I digress... your overall statement is correct from what I recollect. I remember guys getting sent home to shave (one brother was told to take one step closer to his razor), several of us were counciled over the style of overcoat we were, or weren't I should say, wearing. But to bar someone one from participating in the preaching work based on overall grooming is a new wrinkle.
I think there's a connection to the preaching work becoming more robotic than personal. As they move more and more to the literature cart, all a dub has to do is stand there, and answer questions... meaning, all they have to do is stand there. First impression is important, so instead of freedom of choice in style or personality, they want a bunch of Stepford Wives to man the carts. Dress in cult approved attire, your hair and jewelry all approved by the cult wardrobe dept, and you stay on script, repeating the cult mantra, never deviating from the approved playbook.