Recently a renowned country music radio consultant recommended that for a country station to get ratings, it should stop playing female country artists.

It's no secret that for the past decade, it has been more difficult for women to get on the country charts.  Recently, someone made a graphic that shows how several country music songs sound the same.  In fact, they made a video mashup of all of these huge country hits, which you can see here.
I don't think it's a coincidence that coming on the heals of this is the ignorant comment that Keith Hill made.  To be fair, he came back and said "bad music scheduling" was what he was talking about.  You see, there's this unspoken rule that you're not supposed to play to many female artists back to back.  I don't disagree with that.  But to say the solution is to pull female artists out of the playlist is throwing the baby out with the bathwater.  You simply go through your list of songs and make sure they sound good back-to-back and have a good variety.
Keith Hill calls male artists the lettuce in a salad and the female artists the tomatoes.  I think that's appropriate since lettuce basically has no taste and tomatoes are flavorful!
But on a side-note, you're going to call female artists "tomatoes?"  Are you kidding me???
Right now we see a small resurgence in female country music acts.  Women solo artists and female-fronted bands.  Mickey Guyton, Maddie and Tae, Gloriana, The Band Perry, Lady Antebellum, Kelsey Ballerini.  Those are a few female voices we hear now on the radio.  And I like that.  I think it makes sense to have them break up the male voices of Luke, Kenny and Blake.  It makes for a better variety of sound on the radio.
Gwen said something to me along the lines of males sing songs of things women dream about.  Females sing songs that women are feeling or going through.  So to say that women don't like to hear women on the radio is horrifyingly old-fashioned in 2015!
Now, heads up, I'm about to quote Miranda, so this may not be appropriate at-work material for you to be reading.  I'm not supposed to use bad language but I'm told I can quote people.  Miranda, on her Twitter feed, called Keith Hill's comments "the biggest bunch of bullshit I've ever heard."  To prove that that is a quote, below, I will give you the links to Miranda's and others' tweets that I think are appropriate responses.
Jennifer Nettles:
Kacey Musgraves
Martina McBride went on CBS This Morning and gave a GREAT interview about this issue.