Well, I would disagree. Biathlon is about skiing/shooting combo.
Penalty loops are flat, so relatively speaking, women do not lose as much time to men compared to downhills and especially climbs.
So unless penalty loops are made bigger for women, skiing will become (even) more important than shooting.
Aside from being inconvenient, using different penalty loops will again bring up the distance inequality, so there is no reason to change it.
As for the individual, 1 min of penalty can be made up considerably more easily in a 55 min-race than in a 45 min-race.