Does having 2 different bank accounts for husband and wife affects the relationship?

First of all..the girls is not acting like a mature person here.
With every arguemnet she tells him how she is good that she spends or wants to spend money on his family.

He is right in asking her not mentioning it but should say…Don’t spend any money on my family.

Overall the girls is not a nice person. or she does not know when to stop hurting others.

And separate account is an absurd idea. But same bank with different account number but mutual access is not so bad idea.