You don't have to be male to be a techbro, in a way.
I am also reasonably sure that FB (as well Google and others) are engaged in some pretty public efforts to improve the gender balance in tech. Or at least pay lip service to doing so. Might they be doing so because there actually is a pretty well known gender disbalance in tech.
Of course if you were meaning to say that a lot of negative moves on FB's part come from quite female Sheryl Sandberg, well, yes, but I don't think she's involved with the tech side.
What I'm meaning to say is that despite your desire to move the goalpost of the argument in order not to seem wrong, the term 'techbro' pretty exclusively brings to mind a negative male stereotype for most people.
Your post would have been better phrased using the term "software engineer's", which would have gotten the same point across whilst being gender neutral, neither reinforcing said negative male stereotype nor erasing female engineers in the culpability of said belief that "technology can solve everything."
I am also reasonably sure that FB (as well Google and others) are engaged in some pretty public efforts to improve the gender balance in tech. Or at least pay lip service to doing so. Might they be doing so because there actually is a pretty well known gender disbalance in tech.
Of course if you were meaning to say that a lot of negative moves on FB's part come from quite female Sheryl Sandberg, well, yes, but I don't think she's involved with the tech side.