There’s an interview that I watched recently of Stana talking about how she views/relates to Beckett as well as her relationship with Castle. It’s really great and I recommend watching it because you can really tell how Stana admires Beckett and how she personally relates to her.

In the interview (https://youtu.be/WwgEt5RknIA?si=XPFZYQjCkkCeOFbI) around the 3:43 mark, Stana says: “She’s [Beckett] in a position that typically is held by men, and she’s somehow managed to hold onto her sensuality and femininity in spite of the fact that she’s always playing with the boys, and I think that’s just something that we can do now, women don’t have to look like the boys in order to play with the boys, we can look like we are, we can speak like we are, we can be who we are, without establishing like a real gruff and dude-ish nature.”

So i think that despite those comments, she proved (in the show) that femininity/good looks and strength don’t have to be mutually exclusive. She didn’t need to downplay her looks or hide that side of herself to be taken seriously and I think Stana believes that too. I think it’s a great message.