It is unfortunate, I cannot find any evidence of Laplace being quite open minded to women (or not for that matter). I know some fellow scientists were actively supporting (a singular, to be fair, there just werent that many to support) woman. Namely Lagrange, Legendre and Gauß. Still, perhaps they (the author) deemed Laplace to be a cooler name. Although imo itd be Legendre for the plebs, and certainly Gauß for the educated. (Im just kidding of course, they were all brilliant)
I would wager that Laplace here isn't actually named after the scientist but after a thought experiment of his, Laplace's Demon, which aimed to demonstrate IIRC that if you know both the position and the momentum of every particle in a system you could predict its future perfectly.
For whatever reason Japan seems really infatuated with these kinds of things - there's a VTuber in Hololive who goes by Laplus (AKA Japanese respelling of Laplace), Maxwell's demon (another thought experiment about thermodynamics) is a Servant in Fate, and so on.