Burnham wasn't right at all. There are several times through out the season which supports that she was wrong.
It was wrong to mutiny.
It was right to attack without warning.
Georgiou was a danger to Galactic peace.
You could not reason with her.
Galactic peace was doomed because one Starfleet Captain was too puritanical to observe the accepted the centuries old uncouth winning strategy of dealing with the Klingons.
She had to be removed from play.
Which is grounds for court martial, and something illegal which Burnham was fine with, because it was very unlikely that she was going to survive the battle of the Binary Stars, and that was the cost of total victory.
Death in a fight, or life imprisonment.
A perfectly logical sacrifice to save trillions of Federation Citizens AND Klingon warriors.
It was Georgiou's death, that Michael punished herself for, and she felt guilty about, and the reason why she didn't offer a defense in her own trial. Burnham was accepting punishment for the crime she wan't being accused of, Georgiou's death, and not the crime she was being accused of, mutiny.
The mutiny was weak sauce.
It lasted thirty 30 seconds.
Georgiou woke up and defrocked Michael before Burnham could implement Sarek's plan.
Michael's criminal actions were not responsible for the battle, or any of the consequences of the battle, or the death of her Captain.
Michael would have redone everything the same again, up to the point that she and Pip beamed over to the Klingon Ship to fight 400 klingons by themselves, like idjits.
Saru is possibly ten times stronger than a Human, so he's 3 times stronger than a klingon. Sure a phaser is the great equalizer, but it's a Klingon ship, of fricking course its going to come down to a sword fight.
Saru would have pwned the Klingons, and Phillipa would have been alive at stories end.
Oh, and maybe Michael would have stunned Georgiou so that she stayed asleep for an hour, instead of putting her out for a minute with a nerve pinch, if she turned off the phaser alert klaxons first, if we are thinking about what Michael would have done differently.
Her most prevalent issue was not that the Mutiny was bad, but that the mutiny was stillborn.