Unlike with Capt. Crozier, Teddy Roosevelt's Round-Robin letter leak to the press, after initial fury from McKinley, resulted in immediate help for Roosevelt's troops, not his firing, & even though McKinley was indignant he of course later named Roosevelt as his running mate https://twitter.com/navalinstitute/status/1246093946943610881

Long story short: everyone claiming "it's normal protocol to remove Capt Crozier from his post," there's clearly a good deal of historic precedent demonstrating there are multiple paths the military could've taken. Instead they took the most punitive during a global crisis