Hmm, as someone relatively deep into lgbtq issues (particularly trans issues), I’d say the term itself is perhaps a bit misleading. The way I understand it and see it used is that it’s about heterosexuality and also gender norms within that traditional heterosexual relationship. In that sense (to directly relate to the post) a dominant woman in a relationship with a submissive man would actually go against heteronormativity.

On second thought I guess I can see the relation though, in the sense that the traditional “man is dominant in a hetero relationship” combined with the fact that by default most men probably mostly top could make someone see “topping is considered dominant” to reinforce those traditional relationship norms. Still feels very overreactive by the original commenter but eh.