Not worrying is all very well, but imagine the family dinner starts cooking at 6pm, is ready to eat at 6:30pm, and has gone cold by 6:45pm. And imagine this timing works fine 9 days out of 10.
It's reasonable for whoever is doing the cooking to want to know - ideally at 6pm and certainly at 6:30pm - whether their partner is on time, running 5 minutes late, or running an hour late.
> Healthy relationships do not require "ceding authority over own schedule"
People do that all the time - A person who has promised their partner they'll get home by 6:30pm every evening for dinner has ceded control over their schedule. Nothing unusual about that.
> I would seen that as a red flag and sign of controlling personality.
A partner who will have dinner ready when you get home from work doesn't seem like a red flag to me.