No. Azzy getting the spear is how she becomes the dragoon. If you give it to someone else, they become infused with the draconic essence. And the game isn't set to block content only based on purity or corruption, it's based on choices. You can block out Evelyn's whole content but deciding your Champ isn't a peeping Tom and just politely closing the door and not even realize you've just lost out on it. You can lose out on great family scenes and a Freja by choosing to be friends with Aileh. You can miss a lot of Kasyrra content by just being antagonistic or being soulbound to one of the Seven (not just being Pure or Corrupt, you can certainly do corrupt, lustful sex to become lovers easier). So it's isn't only set up to block things based on that, even though those are certainly the most notable options.