No-one uses the Olson "right" TZ data files.
What is stated in M. Chan's article is only true when using the "posix" TZ data files. But that's not the only option.
* https://unix.stackexchange.com/a/327403/5132
* https://unix.stackexchange.com/a/334029/5132
* https://unix.stackexchange.com/a/294715/5132
No-one uses the Olson "right" TZ data files.
What is stated in M. Chan's article is only true when using the "posix" TZ data files. But that's not the only option.
* https://unix.stackexchange.com/a/327403/5132
* https://unix.stackexchange.com/a/334029/5132
* https://unix.stackexchange.com/a/294715/5132