But I think PJ took it further than saying "gender doesn't matter, I do what I want" because she specifically trafficked early on in male imagery, particularly on
Rid of Me. That was a conscious decision she made that, while she may not consider it feminist, I think makes the work undeniably about gender.
"Man-Size" is, to me, one of the clearest examples of feminism in early PJ Harvey lyrics, as it directly ties confidence and power to masculinity. When sung by a woman, that's a remarkable and feminist statement, as it's PJ treading into a taboo territory and claiming a gender role that women are societally barred from. "50ft Queenie" ventures into similar waters. They're power fantasies that put the language of masculine aggression in a female voice, which claims that power for women or at least as not solely the domain of men.
For a similar take on the same theme, try out Hole's "
Be a Man" or Neko Case's "
Man". Hole's is more explicitly a critique of the power fantasy ("rape the world just 'cuz I can") while Neko's more explicitly lampshades the irony of a female voice singing a song about her own masculinity ("I'm not an identity crisis, this was planned").