Words have meanings.
Feminism involves, among other things, supporting women's rights. If you actively seek to throw away women's rights, you aren't a feminist.
It would be like calling yourself a Christian, while not believing in god and making comments about "Sky fairies."
Or calling yourself a Marxist while believing in the supremacy of the market place, trickle down economics and private property.
Or calling yourself a pacifist while getting into fist fights every Saturday night.
You don't just get to call yourself something because you like the sound of the word, or think it puts you in a club you'd like to be thought of as belonging to.