[ltbarcly3]

No file format is perfect, I've been using xz for years and I can't think of a single issue I have had. The compression rate is dramatically better than gzip or bzip2 for many types of archives (especially when there is a large redundancy, for example when compressing spidered web pages from the same site you can get well over 99% size reduction compared to 70% reduction for gzip, which means using less than one 30th of the disk space).

Lately I have been using zstd for some things since it gives good compression and is much faster than xz.

This criticism of xz just seems nit picky and impractical, especially if you are compressing tar archives and/or storing the archives on some kind of raid which can correct some read errors (such as raid5).