Generally considering that "dude" is a somewhat masculine word, so using it to refer to someone with she/her pronouns in her username (implying that she doesn't want to be referred to with male terms) without knowing if they're okay with that word just makes you look like a piece of shit.
Generally considering that "dude" is a somewhat masculine word, so using it to refer to someone with she/her pronouns in her username (implying that she doesn't want to be referred to with male terms) without knowing if they're okay with that word just makes you look like a piece of shit.