My town is extremely small, it has:
- Zero traffic lights
- Zero restaurants
- No doctor, dentist, or vet
- Nowhere to buy prepared food, no food after 6pm
- No public transport
- Assuming normal population distribution, 20-30 intersex people
Because, you see, intersex people are rare. Only 1.7% of the population.
So if a group of people is very small, like my town, your family, your workplace, etc, it might only contain 10-50 intersex people.
You may only meet them a few times a day.