On one hand it makes sense that medieval european social relations imply, well, medieval european social relations and it makes sense to use your novel (or your show) to examine those.
On the other I can relate to many people wanting to see women in medieval fantasy to be represented in some other way than constant misery porn.
I mean, I guess? I've never heard anyone express the opinion that "buddy" is a gendered term before. My entire life I have heard men, women, and nonbinary people referred to as "buddy" by men, women, and nonbinary people. It's not even like "dude" where it's mostly gendered but can be used in other ways, like it literally just doesn't have that connotation at all for me.
https://www.reddit.com/r/asktransgender/comments/hq8zav/is_bud_genderneutral/
Ok, I mean, three commenters there say it is gendered, three say it is gender neutral. Regardless, you don't need to worry about me calling you "buddy" or anything because I will not be addressing you. Please leave me alone.