Why do many Young Girls Preach for 50-50 in household chores but NO 50-50 in Finances ?

Why do many Young Girls Preach for 50-50 in household chores but NO 50-50 in Finances ? Why this Hypocrisy ? Why according to many women (especially young girls) a Man's money is both's money but woman's money is only her money ? Why this selective feminism ?