It definitely can be bad as they can't get away quickly if a predator comes near, it can be painful, they may become unsteady, unprotected, and the bird grows quicker than the wings. the wings actually twist and turn outward which is especially painful, which can become permanent. Fixing it when...
It looks like angel wings.... Usually when you give a certain amount of food for too long or when they don't have the right nutrition... You can fix it early on with a wrap to hold it in place and to develop right. They could've been deformed as well