From wikipedia
"The Women's Charter was an Act of the Singaporean Parliament
passed in 1961. The Act was designed to improve and protect the
rights of females in Singapore and to guarantee greater legal
equality for women in legally-sanctioned relationships (but not
those of Muslims). Definitions of the rights of husbands and wives
in marriage, as well as outlining legal potentialities with regard
to divorce and separation, and the banning of polygamy are some of
the major elements of the Act.
An amendment was passed to the Women's Charter in 1996, which
focused around rights regarding domestic abuse and matrimonial
assets."
Not mentioned above is that it also includes legislation dealing
with the prostitution of women and girls. Doesn't seem to cover the
prostitution of men and boys.
There is a basic assumption that the man is sole bread winner and
therefore liable for maintenance but the woman is not.
I would consider that portion discrimination as house husbands are
not protected. That part probably needs to be updated.
However if men find the laws governing marriages onerous then the
entire Act relating to that should be examined and redressed. The
purpose of the law was to protect women, not discourage
marriage.
To abolish it would be to abolish many other things as well. It
would be necessary to enact new laws to cover those other
items.