I've likened it before to the
situation where a licensed electrician tells you that he can't
do what you want because it violates numerous safety codes, mainly because it
creates a dangerous safety hazard, so instead you call your brother - in - law to
do it because you know he has a great stereo setup and thus knows
something about wiring.
Now, moms should cover as much as they want, but when women are only ever shown nursing while covered up it reinforces the idea that there is
something shameful
about women's bodies, and
creates a
situation where women who don't or can't nurse under a cover are mistreated.