All of those options are of the "Don't Bother Me" variety, and they assume that everyone will interpret a lack of "Don't Bother Me" as an invitation to contact.
That assumption is incorrect. I know for a fact - having discussed it with them - that some of my in-game friends are reluctant to ping me if I'm teamed, or in an SG base. I have told them "If I'm on, ping me - if I'm busy, I'll say so", but still.
I'm suggesting the ability to make a more affirmative declaration of "Feel free to contact me, even though I look busy."
THAT is "what is accomplished by the OP that isn’t accomplished by hide options".