I think brothers are a hugely misunderstood vocation. People “get” that a man wants to be a priest but to a large extent don’t understand why he would want to be a non-ordained religious.
I was at a dinner and was involved in a conversation with a priest, a brother of the same order, the DRE of our parish, and myself. The DRE asked the brother when he would be ordained. He tried to explain that he would never be ordained, that wasn’t his vocation. She kept asking about why he was quitting, why he had decided not to go “all the way to priesthood,” etc. The other three of us tried to explain that Brother’s vocation was the male equivalent of a religious sister and ordination wasn’t part of it. She couldn’t get past the idea that a woman would become a sister because she CAN’T be ordained but since a man CAN be ordained why wouldn’t he want to be?
There may be more to it than that, but I think a total lack of understanding, even among otherwise knowledgeable Catholics, is a part of it.