I found the resolution of the story to be unsatisfying. The Crux of the season, for me, was investigating the red signals, signals Spock has known about for a six months before they happen.
These are essentially psychotic symptoms that get Spock committed, voluntarily. Before proven true, Amanda and Michael look through Spock's history with the Red Angel. They both feel responsible for how much pain is in. This is contrasted by Burnham, who sees the Red Angel, and she hides it for fear it may be an angel, God, and betray her belief in science. Again, running into a mycellial network organism from the dark matter asteroid, May inhabits Tilly as she is training to become Captain. This is analogous to Spock's quest for the Red Angel, and shows the consequences of Spock's decisions, why she is trying to commit himself, and leave the Enterprise.
Section 31, knowing Spock is right, attempts to gain access to him by framing him for murder, setting off another round of hand-wringing by Burnham and Amanda. Amanda finds Spock, broken and crazy, and they take him to Talos so that he can be normal, again. Able to think, Spock informs Pike and crew something will destroy all life in the Galaxy in 950 years. Spock rejects Burnham's attempts at help, and they spar over their relationships and who they are. The rest of the season is trying to stop AI Control from attempting to gain sentience and destroy all life in the Galaxy. As Burnham fails, Spock helps her pick up the pieces. The resolution has left bitterness in my mouth. Outside of fleshing the Baul (who, it would be cool if they were advanced Kelpians, not another race), and the Church episodes we're obviously meant to flesh out characters, which drives much more of the time in Discovery, than plot.
7 signals appear in the sky. What does it mean for Burnham? Amanda? Spock? Pike? Stamets? Tilly? And how they all relate. If they tie every plot device together, Star Trek would sound a lot like Next Generation, which has been ripped to shreds by the same people who hate Discovery.
We, as American, want plot. Discovery does theme and character. "No one gets left behind." All season they spend time rescuing each other only to take the ship into the future, and leave an entire ship behind, both doing it together, and informing their sacrifice.
Star Trek has never been perfect. Just saying. And, to be honest, I watched the majority of the season three months ago in a week tempest. My analysis is from memory.