I think it’s a way of making a person feel welcome, as an individual, in our parish, just as I would say, “Your daughters look adorable today!” to one of the mothers.
But whatever ... until someone with the ultimate authority says we all have to be the same, we don’t all have to be the same.
Different people react differently to "reaching out". I, like many trads and more reticent people in general, react poorly. Generally the most we do is a slight nod in the parking lot, although some of the ladies visit with each other and their kids after Mass.