Yes, it is still useful. Even structures obtained through traditional means (eg. x-ray crystallography) are approximations to an extent since there are limits t

Yes, it is still useful. Even structures obtained through traditional means (eg. x-ray crystallography) are approximations to an extent since there are limits to the resolution that you can obtain and oftentimes regions of proteins are "disordered". Additionally, these structures are only snapshots of a protein in a particular state, which may not completely reflect the dynamics of the protein in its native environment.