Oh yeah, that ship was simply crawling with crew. Also look at all those people with her in warbringer video.
And thats basically what makes is deus ex machina.Just because Jaina does a thing doesn't mean all mages can. You're just being pruposely stupid now to make it seem like Jaina (or whoever made up her lore) is an idiot.
Nothing we've seen in game tells us she shouldn't be able to do what she has done so far.