> Adding distraction, eroding the customer experience, and reducing the professionalism.

The professionalism of ... Starbucks coffee shops? Are you for real? It's not a bank. Let people wear what they want and what makes them happy. You can still require people cover sufficiently for sanitary and safety reasons.

> On another note, seniority is a toxic, irrational policy

Yes. Agreed. But also, Starbucks has been hiring people specifically to "outcompete" pro union voices. A rush of new hires can destabilize organization efforts. Seniority for the purposes of protecting workers is reasonable. Seniority as the only criteria is not. It's a careful balance.