The plan was to escape in cloaked shuttles. It’s like being in a burning building and making a plan to walk out of it. It’s not rocket science. There was absolutely no reason to keep it a secret.

As you say, there’s nothing about sneaking away in cloaked ships that requires Manhattan Project-level secrecy. It’s a pretty straightforward idea.

If Holdo had told Poe what her plan was, do you think he would’ve let Finn and Rose go?

Poe is the Wing Commander, he’s two ranks below Holdo. He’s way above being a mere pilot.

“No one” is an exaggeration, of course, but the facts stand. Holdo keeps her plan a secret. Therefore, half the officer corps think she’s nuts and turn against her.

Okay, what’s the scenario in which the First Order finds about the cloaked ships because Holdo told people what her plan was?

Yes, the Hoth evacuation was in full view of the Empire, and this one was in full view of the First Order.

Her plan doesn’t rely on secrecy to succeed.

The difference being that Poe’s actions track. Holdo’s don’t.

I’m not angry about anything. I would be angry if I were any of the Resistance fighters onboard that ship, though.

You’re being intentionally obtuse, right? Did you see Empire Strikes Back? Leia explains in detail how shit’s going down:

Because she didn’t tell anybody.

Because it’s an evacuation, that’s why the mutineers would be privy to the plan.

No one’s saying she has to get her subordinate’s approval for her plan. She simply has to tell them. Kinda like, oh, I dunno....

Which...they wouldn’t have if she had simply told people what the plan was.

Poe doesn’t chill because it seems like Holdo is on a suicide mission. Poe’s not the only one who feels this way, hence all the help he had with his mutiny.

That’s some weak tea. Poe is clearly in line to be a leader. He’s two ranks below Holdo as a Commander when the film starts.

Okay, but you don’t tell anybody?! That’s a stretch.

Why should he trust a plan that ridiculous?

Who knew about the plan aside from Leia? Laura Dern was obligated to tell somebody what she was up to.