The real Sigma answer is "the Blades couldn't find their own asscheeks without a map, and you'd still be playing innkeeper in the middle of bumfuck nowhere without me. You don't give me orders".

In theory the dragonborn himself has the soul of a dragon. If what she claims is right, then you are as potentially dangerous as Paarthurnax if not more because you can casually bitchslap dragons. Are you really going to listen to a bunch of idiots who have been willingly serving men with dragon souls on how every dragon should be slain or are you going to trust the only other dragon that has been trying to attone for his past sins for over a few millenia without relapsing into murder even once?