Why do you consider gender inflections to be refined? Genderized things are essentially arbitrary and just something else that needs to be memorized. Even for people it gets tedious at times, hence why english has has the singular they for quite a while for referring to positions or unspecified people.
> Genderized things are [...] just something else that needs to be memorized
The same holds for the vocable - here, "nobody" complains that this is just something else that needs to be memorized. So, just consider the genus as part of the vocabulary word.
