A problem with what? And yes, it would be more convenient, but having such large wings gives them a clear weakness to contrast their other powerful skills like fire breath and really light yet protective scales. (Also, I am going to handwave it so they can fold their wings really well, the size will only be an issue for flight.)
Also, this dragon is a god that can shapeshift, gravity manipulates, light manipulates, energy manipulates, and more. He is one of the more powerful beings in my universe.