It all depends on why it is done. To do it just to have more bits representing pretty much the same mix is probably a waste objectively.
However I would think it useful if remixing or remastering to achieve a different sonic result is the goal. The results might be considered an artificial artifact of the original but might be able to better emphasize certain aspects of the music in the recording most likely at the expense of others. If done well the results could be significantly different sounding and might well even be deemed better by some. A better recipe per se still using the same ingredients but rearranged in some way that might be tastier in some ways.
However I would think it useful if remixing or remastering to achieve a different sonic result is the goal. The results might be considered an artificial artifact of the original but might be able to better emphasize certain aspects of the music in the recording most likely at the expense of others. If done well the results could be significantly different sounding and might well even be deemed better by some. A better recipe per se still using the same ingredients but rearranged in some way that might be tastier in some ways.