Since you did spend a lot of time to find this edge case, it's only fair that I give you credit and concede that there are edge cases where a multi-time all-star, having a bad season, can have one advanced stat below top 5 of their own team. In this case, Doncic lies just outside top 5 in W/S. As I mentioned, I'm only interested in discussing the main point that advanced stats (and even regular stats) do not paint Herro in a good light. As you just confirmed, Doncic's respective win shares also reflects a poorer season that he is having, so it doesn't matter to me either way.
List of CF terrible takes - Miami is stupid for not wanting to trade Herro for Harden - Westbrook is an upgrade over Paul - Jalen Green is a bust