Hi Amanda, It's NOT - to some women It's - about some women or - of specific women
To whom is the speaker taking about we don't, he could be talking to one or more person, male or female, even to himself. And maybe even his not talking about women at all. He could be talking about female animals... who knows, ok ;)
In Italian, the adjective has to agree with the subject of the sentence in gender and number, so if the adjective is singular it means it is one person (I am), and if the adjective is plural it means it is more than one person (they are).
Sono alto. I am tall. (alto tells us it is one male person)
Sono alti. They are tall. (alti tells us it is more than one person and at least one is male)
Sono alta. I am tall. (alta tells us there is one female person)
Sono alte. They are tall. (alte tells us that there is more than one person and all of them are female)