One thing about the dénouement of the season finale confuses me. In addition to time suits and time crystals, Spock recommends erasing Discovery and its spore drive from the records in order to prevent a recurrence of Control.
Why? The spore drive had no bearing on the discovery of time travel or Control so knowledge of its existence should do no harm. Did I miss some foundational relationship?
Indeed, its been established that if the mycelium network dies, all life in the galaxy will perish. Even if the drive is found to be mostly useless, requiring as it does a genetically altered human to operate, wouldn't it be prudent to maintain study of the network to detect if another civilization (in this dimension or a nearby one) is poisoning the network?
How does one go about hiding a foundational element of the universe anyway? There was something that caused it to be detected. That something isn't going to go away with anything less than Q-level power.