The idea that women are inherently non-violent is just sexism with a seemingly woke coat of paint.
"Women are less prone to violence" is a very different statement than "women are inherently non-violent". One of those things is empirically true, the other is an incorrect conclusion reached from that information.
It is indeed the foundational philosophical undoing of both patriarchal chauvinism and trans-exclusionary radical feminism that they take differences in the typical behavior between sexes and genders to be biologically innate, rather than psychosocially conditioned constructs that persist due to the widespread influence of the former's ideology in powerful institutions and the latter's overcorrection for as much forming a dynamic equilibrium ouroboros in which the conflict is self-serving spectacle for profit and clout.