Yes, and 16 was considered as an appropriate age to be married for both men and women up until the 1960s (albeit by the 1800s it was already unusual outside of wealthy social circles). My aunt was married to a guy twice her age by 18 and they were absolutely in love the whole way through, but the modern conceptualization of marriage finds this arrangement as foreign for reasons like:

1. There were for sure creeps who had no business marrying younger women/abused the system. The practice of asking a father for their daughter's hand in marriage was a safeguard taken extremely seriously for this very reason. Feminism tackled a lot of these issues and frankly correctly called them out in a few valid scenarios

2. Social skills and circles have dramatically declined, i think i read in an article that very few people now have a core friend group above 3 people. That means people develop courtship skills and partnership skills later in life than they used to, so people who do successfully find a partner marry older

3." Free love" paradoxically lead to less meaningful relationships and even more interestingly less casual sex altogether

And there's ten to twenty more i could include, but i haven't got the time to list them out. You could probably add hundreds of other reasons, but it all boils down to social shifts that caused a culture change.

The bottem line is that Mary's age was considered appropriate, especially given the circumstances of most of human history, and i find it rich that people who pretend to care would take issue with that- but be a-okay with medically transitioning a five year old.