re: “Us Girls”, etc,
I cultivated a habit from years back of referring to groups of females as “the ladies”, i.e., the ladies in the office, the ladies at church, the ladies in the changing room at the gym. Groups of males, I refer to as “the men” or “the gentlemen”, i.e., the men in the office, the gentlemen in the train. My girlfriends and I, I refer to as “the girls”, but that is because we’ve known each other since we were girls, and we like to maintain some facade of our disappearing youth.
For individual persons, I refer to either the lady or the young lady, and the man or the young man. I was taught from my childhood that to call any male person who might be of age “boy” is demeaning and disrespectful (my mom was a northerner in Selma, AL during the civil rights movement, and ever since she’s felt very strongly about this). Therefore, I thank the young man who helps me out to the car with my packages, or pumps my gas at full service stations, or holds a door for me when my hands are full (or not full).
All of those actions (assistance with parcels, gasoline, doors etc) to me indicate manners, and I would imagine that they are extended as readily to anyone as they are to me. At the same time, I have been told that I walk around with the sort of look that means I expect to have doors held for me, etc; it just means I was taught what is polite and do expect others to behave as courteously to me as I do to them. Nobody needs courteous behavior, but almost everybody appreciates it as a nicety.
That said, I just looked at the thread title again, and I think the premise is faulty. No, generally, unescorted women are not handicapped. Some may be, but that has no bearing on whether they are accompanied or not. As someone else pointed out, the sign indicates the same service being offered to two distinct groups of people: (1)handicapped persons and (2)unescorted female persons. My opinion is that if I were to be offended by the sign, it would be at the implication that females need an escort, not that they are unable to operate a gas pump.
A related question: are there not some states, or at least municipalities, where all gas stations are full service? For some reason New Jersey comes to mind, but I’ll have to look it up. Or if anyone knows offhand they can just tell me.