You are missing my point that in languages with explicit grammatical gender of nouns, it is not true that \forall grammatical gender==implied sex, e.g. in Polis

You are missing my point that in languages with explicit grammatical gender of nouns, it is not true that \forall grammatical gender==implied sex, e.g. in Polish if you wrote zegarmistrz (watchmaker, masculin) you would use masculin suffixes for adj/v and you would not imply the sex since there is no feminin counterpart (even if you really tried). In your case, решил probably (I don't speak Russian) inherits the gender from пользователь. My broader point is that in many languages, which Slavic ones are a subgroup of (but in German as well), there exists a construct that is used when you do not want to imply sex. In English they struggle with the one/he/she/they. And, BTW, in my experience she is more popular than he (e.g. in financial literature bankers are all 'she' even though female bankers are as common as female coders most likely).