Contrapoints, calls this simplistic incel possibilities, however, when if it were more complicated?
Hypospadias effects the personality in way that can range in many ways. As I think a killer will drag out what ever self justification culture will allow, and there really no justification for murdering.
However people with character problems, poor raising, and possibly even things like Hypospadias, that never got dealt with can lead to this, the dismissive concept of “incel,” may mislay actual psychological trauma that leads people to interpersonal, intimacy and sexual complications that lead to frustrations.

So the killer acted from the incel logic that views male sexual desire as a torture inflicted on men by women. He sees Asian sex workers as a “temptation,” an “issue” to be “solved” by committing mass murder. Narcissistic, dehumanizing perspective. https://t.co/YWlOKOVjSD

— Natalie Wynn (@ContraPoints) March 17, 2021

So this really has more to do with the “incel” label and other factors. It can be a place effects everything from people dishing out blue “sexist” humor (not a problem), self targeting jokes (great), to nasty tweets (whatever) and other misogynistic reactions (hatred of women), or suspicions of women as well.
All I could say, is maybe educate, and maybe try to understand what molds people. Even studying the more criminal elements, should have more date on birth defects.

Some Sources about Hypospadias.
http://heainfo.org/index.php/2015/06/06/psychological-effects-of-genital-abnormalities/
https://www.psychologytoday.com/us/blog/you-it/200809/hypospadias-very-common-male-birth-defect
https://www.hypospadiasuk.co.uk/life-stories-of-men-with-hypospadias/
https://maxhealthpro.com/hypospadias-and-its-detrimental-psychosexual-effects/
Do search Hypospadias, “Hypospadias Psychology” “Hypospadias Cripple”

You can get merch about it here and support an artist/humorist who suffers of the illness as Hypospadias Cripple. Spread awareness. Some other designs here

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