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No, I wouldn't say that. There is information from them, of course, but it's so minimal... Autopsies don't provide information about connections, and they almost won't provide any information about reactions or anything else, so it's generally a waste of players. Unless, like Tox, at the right moment, and with loopholes in the rules...
Overall, you're wrong. An autopsy isn't just about revealing information about a certain role. (and the person being autopsied may not even be that role)
An autopsy provides information about who believed the autopsy and who didn't, and what the reaction was. This is exactly what provides information about connections, and also allows you to logically determine who has additional information from their nighttime roles, or who is a certain role.

В тихой однообразной жизни всегда так бывает: каждый отдельный день бесконечно долог, но месяцы и годы мчатся с непостижимой быстротой.
I wanted to offer you some flowers, but a crown would suit a princess like you much better
Смысл жизни в том, что жизнь на тебе не заканчивается