According to the latest Lucky Bancho survey, female Hrothgar are already more popular globally than female Highlanders, male Highlanders, female Elezen, and almost all Roegadyn. They're about even with male Elezen. They don't beat the "cute" races but nothing ever will except maybe another cute race.
I was surprised myself at how popular they are but I don't think the devs would purposefully neglect a race based on its popularity anyway, if that were the case they wouldn't have designed them that way to begin with. Not every race needs to be massively popular to be a worthy addition to the game. Different options bring different crowds of people into the game.
