24 Bit vs 16 Bit - digital transfer of an album

[UniSol GR77]

Hello,

I've been told that - if you must digitally transfer an old analog production master tape with only 2 stereo channels (right and left) - you must do that at 16 BIT, because 24 BIT would not make any difference.

On the other hand, if you're working with a multitrack analog master tape, you must transfer each single track at 24 Bit, remix that, and what you get at the very end is a TRUE remastered and improved digital master of the album.

True?

At the end of the day, what you get on CD is 16 BIT anyway.