In my opinion, the only person who can decide whether a drivers needs to charge is the driver themselves. No one else has to right to judge their need whatever be the case - local, traveling, shopping, big battery, small battery, 50% soc, 90% soc - doesn't matter. If you believe someone is judging their need incorrectly, you may try to educate them F2F or via a note, but you cannot demand they move out of your way. When someone gives way to someone else to charge because they think the other person is in more urgent need, it is courtesy. Courtesy should only be extended, never demanded.
Also, I agree with others that no one has the right to unplug someone's car, no matter what the charging state (even if it is 100%) - unless they have explicit permission to do so. I always leave a note when on trips charging on L2, that says "OK to unplug after xx". I learned this on my very first road trip as a new Tesla owner when I found someone else do it at Yosemite.