Oofta
Legend
Depends on the imagery and audience. If you're truly trying to evoke Tolkien, I think it's more than just beards. The bearded lady from circuses of long ago was still obviously female.I honestly don't understand why it's a big deal. Saying "dwarven women traditionally grow beards" does not in any way prevent a player from saying "my dwarven woman goes clean-shaven". It's not like I'm saying all dwarven women have a third ear growing in the middle of their forehead. The player don't need to beg and plead to be able to decide how their character grooms themselves. It's hair. And adventurers are usually assumed to break the traditional mold to begin with.
If anything, I would assume that offering both bearded and unbearded dwarven women as normal and the default assumption would be the more inclusive option.
If your reference point is any official D&D product from the 21st century, it would just be odd.