Poes reaction in TLJ was completely justified, and a result of poor leadership.
You think someone in the military can just refuse to obey orders unless someone walks them through the plan and gets their approval? How would Patton have reacted to Poe?
Holdo was justified in keeping the plan to her immediate staff. As soon as Poe heard it and blabbed it over the radio, DJ used the information to cut a deal with the First Order that resulted in many deaths.
Poe didn’t respect authority and a leader needs to learn this before they are ready to command.
Thats not how official hierarchy works at all, not in companies, not in the military. Poe was the second in command, Holdo came from nowhere and immediately engaged in hostilities with him. Thats not how a leader behaves. Let alone the monumental failure of communication. Can you imagine if a single authority figure withheld all the details of the mission to themselves?
Being a leader isn’t about issuing orders and commands, it’s about communication, guidance,…leading. Holdo didnt lead anyone to anything. she did the opposite, she acted like a fascist and a draconian head of state. so if you want to draw comparisons lets look at the context. She looked and behaved like a corrupt leader, so a rebellion is a consequence of oppression. He is a rebel afterall, and Holdo didnt seem any better than your imperial scum.
In contrast, the storming of the capitol was not justified, as they were working against a transparent and democratic transition of power. In rebellions context is everything, you are not automatically in the wrong to rebel.