Not quite everywhere. At my current job, I have gotten somewhat proficient with sed, which is the most advanced editor installed on our production systems.
Also, for some reason, many modern systems still only install vi by default. If you know vim, you know vi; but it is missing enough features to be annoying.
A lot of Linux systems (most as far as I know but could be wrong) actually ship vim but in a very stripped down build and set up to run in vi compatibility mode by default, e.g. vim.tiny on Debian and Ubuntu. BSD systems often use nvi, which is quite close to the original vi, and can feel very weird if you are used to vim.
Also, for some reason, many modern systems still only install vi by default. If you know vim, you know vi; but it is missing enough features to be annoying.