That you think a sad person needs consoling reveals your lack of understanding of the problem. It wouldn't occur to an autistic person to console someone who is sad. The ability to read emotion isn't useful on its own. You also need to know how to react to this emotion. Knowing someone is angry won't help you if you have no idea how to defuse this anger. Social interactions do not make sense for autistic people and need to be learned like a foreign language. It's like writing a computer program. You have to be very precise when telling a computer what to do and the same goes for autistic people. You can't just tell them someone is angry and expect them to know what to do. Or when someone is sad, even if you tell them that they have to console such a person, they'd have no idea what consoling even is and how to do it.