This doesn't look like a disease issue, and we agree that something might have nibbled on the fruit as it was ripening. (We can't tell what...maybe mammals like a squirrel, maybe a slug/snail before the damage calloused-over, and maybe insects.) A barrier like wire caging (netting would work too, but would block pollinator access) might discourage future nibbles if a mammal is responsible. Given the ongoing drought, many are thirsty and may bite into fruits for moisture. You can use the fruit pictured if it's ripened enough; just cut off the portion with animal damage.

The fuzz on the stem and young leaves is normal for eggplants, so that's okay, and the stem pictured looks normal.

Miri