Deciding whether someone's helpful actions or lack thereof is good or bad based on your perception of their internal mental state seems pretty fraught. How do you know why the business implemented this? How do you know what the other patrons felt about it? Do you regularly pick fights with psychopaths in public?
If a woman is being harassed, especially an old one, yes, I have always stepped in. That used to be a part of me I thought was conservative. But it doesn't appear to actually be a trait they hold.
I'm not litigating my mothers treatment here. I am expressing the damage done.