I think the flaw in your line of thinking here is the idea that she wears stuff like that "for" something. Every time a woman has some skin showing it isn't because she is using it for something. She might just like the shirt. It's not like she said "I'm gonna wear this and it's gonna make me a more popular reporter". You interpreting her showing skin as her using her femininity as a way to get into reporting is just the issue that she is addressing here.Personally, I like when they hang out.
She uses those boobs for viewership and now she's complaining that it's harder for women to break into the field? Just seems a little hypocritical.
To simplify, she says that things are harder for women because even when she wears a shirt with a moderate amount of cleavage people on the internet say that she is using sexuality to further her career.