Rather than hate I’d almost say he puts them on a pedestal and has them die as a symbol of ultimate love often. Like when they die it’s either to protect/affirm love for their kids or at least they act brave during illnesses as acts of love to children
the thing with estrid where the narrator said the saddest creatures are those whose mothers embrace them, specifically, kinda made me realize this. He usually has mothers only abandon children through death or tears, and if they do it for other reasons like estrid or big mom they’re comically evil besides. Meanwhile dudes dreams are more important than anything else and mothers are like paragons of love for others, especially the self sacrificial kind of love.