If someone chooses a male pseudonym, is it sensible for everyone to individually decide what pronouns to use? This strikes me as opposed to similar etiquette.
"The singular they emerged by the 14th century,[3] about a century after the plural they. It has been commonly employed in everyday English ever since then and has gained currency in official contexts. Singular they has been criticised since the mid-18th century by prescriptive commentators who considered it an error."
