nobody can really hold lith responsible for killing people syrok was slaughtering everyone to make ambrosia and jormund was married to thrud killing them definitely hurt but to blame lith and call him a kinslayer is a little far
lith should just be like if my kin is a one whod do forbidden magic on children for ego, or a fool who'd rather have the world be a slave for the whims of her wife, then so be it. I'll slay them all.