Makes no difference to me what the situation is. Acceptance of liberal politically correct speech such as single mom to describe a divorcee, a widowed woman or an unwed mother is condesending and ignores by sidestepping the facts.
But you have yet to explain how it makes any difference.
Is a woman ~less~ of a single mother by being a divorcee rather than a widow?
Is an unwed mother solely to blame for her situation?