So what wrong with plain and simple tar c foo | gzip > foo.tar.gz or tar c foo | bzip2 > foo.tar.bz2 Been using these for over 20 years now. Why is is s

So what wrong with plain and simple tar c foo | gzip > foo.tar.gz or tar c foo | bzip2 > foo.tar.bz2 Been using these for over 20 years now. Why is is so important to change things especially as this article points out for the worse?!