Is ''boys will be boys'' just as toxic as ''the sister code'' even if they're in the wrong?

I've heard of cases where people took ''boys will be boys'' (aka bros before hoes) and ''the sister code'' too far, to the point of supporting and enabling toxic behaviors just because it's your own gender. Supporting should be about having each other's back for good things, when it's rightfully needed, when it's about overcoming obstacles... not when it's about allowing bullying, cheating and other bad things they do. Has that phrase become toxic by now?

For instance if I had a best friend that was cheating on his wife for thrills even though he admits to having a happy marriage and lying every day to his kids why would I support that? Must ''boys will be boys'' (bros before hoes) be applied in that too?

Women work in similar manners with the so called ''sister code''. So if a woman is clearly in the wrong, would other women support that bad behavior just because she's a woman too?

Is ''boys will be boys'' just as toxic as ''the sister code'' even if they're in the wrong?
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