For all the talk of Georgiou becoming nicer, remember when she suggested causing a supernova to charge the time crystal and didn't see the problem with wiping out all life in a solar system. That was at the end of the season. She's still just as genocidal as ever, and still not someone I want as a protagonist.
Re-watch DS9 and what Section 31 tried to do to the Founders. If they'd succeeded, and Odo hadn't cured them in "What We Leave Behind", Section 31 would've committed genocide. I think people are forgetting the types of things Section 31 has done when the Federation has faced an enemy they didn't think it could win against otherwise.