four people answered strictly correctly as to what magic(5) is, but not a single one realized that storing some aux data as xattr in linux FS is not in any way

four people answered strictly correctly as to what magic(5) is, but not a single one realized that storing some aux data as xattr in linux FS is not in any way different from just storing the exact same data as a file header. which is how magic(5) works. how come? (besides good luck not forgetting to rsync those xattrs)