That has nothing to do with being on a Mac. Em-dashes and the compose-key work fine on Linux, and Android has them under the '-' of the on-screen keyboard when long-pressed.
(Windows probably has some way, but those are rarely discoverable.)
(Windows probably has some way, but those are rarely discoverable.)
Released back in 2019 for Windows 10.
1. Install and configure this extra tool, which also by default enables a ton of other things you may not want, and may as well be a third-party tool even though it's technically built by Microsoft
2. Do a Google search and copy-paste (!)
3. Use a keyboard shortcut to bring up a symbol picker, then click on the tab containing the en and em dashes, then click to type them in
I mean, come on.