the recent change to blight specifically refer to this :
Quest "Imperial Outpost: Radiant Essence Sphere" now has a constraint on it which prevents it from being offered to dragons.

This change is in very poor taste and feels like this is a start to reduce or restrict interactions between the biped and dragon community's. I personally fail to see or understand why this was done. As far as I understand the devs team wished to encourage community involvement without any restrictions in many cases, yet this change to me is showing otherwise andthe action will speak louder than words