Only if you assume that wifes, mothers, sisters, sujos and female sponsor representatives, etc wouldn't want to have a go at that hair or simply don't exist. Why shouldn't a departing rikishi have their final fight against their daughter.
Like the London koen didn't have any female represantives of anything but they also sidestepped the issue completely with doing awards on the stage instead of the dohyo.
And for mothers who really want a snip they make that hoopla with the platform at the side of the dohyo, with have seen that in danpatsushiki