Workaround as a player is simply to skip forward past that step in the guide, at which point it has steps for the other quests. I'm still on Bleakrock as that character, so I don't know if a duplicate "begin the evacuation" step exists after you've found all the missing people. In either case, just don't talk to Captain Rana about evacuating until you've completed all the other main/sidequests on Bleakrock, which are listed at the UESP link above.
Last I wanna share a curious bug that almost freezes my game and force me to disable the addon. Anytime I add a (Citadel Crossbow [of the Fireflash]) my fps go from 75 to 22, and It's on a paladin, paladins dont even use crossbows. I noticed everytime I put something in my bags the addon takes the math and my fps goes from 75 to ~22 for a while (3 to 7 seconds) and is think it's internal and also think it's fine.
Extract ConsolePort to Interface/Addons. The addon can be downloaded through the Twitch app too. Make sure the addon is enabled when you log in to the game. Install WoWMapper and connect the controller to your PC via cable or bluetooth. Make sure the controller is recognized by your operating system. Log in to the game and make sure ConsolePort is enabled. Now it's time to choose your controller layout. Grats, you can now start playing the game with a controller. (Optional) Enable Action Camera for extra immersion by typing /console ActionCam full, /console ActionCam basic or /console ActionCam default, depending on whichever you prefer most. You can turn it off by typing /console ActionCam off command.