I only skimmed the post (a little TLDR for me..) but you are 100% right from what I read. As a new person to the Cosmere and only having read the Stormlight books and the first Mistborn I was incredibly confused by Azur and her “surgebinding.” To be completely fair a bit of it I had to listen to on audiobook and probably missed a little but for the most part I got the gist and did read the part where Azur joined up and I’m currently at their journey through Shadesmar and I literally found this post because I was trying to figure out This post has been reported for attempting to skirt the rules was going on with Azur not having a Spren hanging out too. At first I thought the eyeless Spren was hers and then finally figured out that it wasn’t and was completely confused. Like where’s her Spren? How can she surgebind? I don’t think she has an honorblade or anything right? Or does she? You’d think that’d be a bigger deal in Shadesmar right? Oh it’s not an honorblade.... okay so she can surgebind now with no bond and no honorblade... why isn’t everyone freaking out?! Thank goodness I finally figured it out after having to dig and dig because I was wrongly googling “Azur’s surges” or “Azur radiant Spren” etc. I’m sure it’s really cool to people who know the background to it. I’m a huge fan of the Dark Tower series and King does a ton of those little crossovers and Easter eggs and I love them but they are never at the level of something that seemed so important. Like they wouldn’t leave me thinking “Since Azur is some sort of super Radiant why doesn’t she just save them all?!” the entire time...