People really get hard up about it shipping with some older versions of some tools. But if you are really that much of a unix nerd then you'd also know that is solved in 5 mins with a brew one liner.
https://learn.microsoft.com/en-us/windows-server/administrat...
As for tmux, I know UNIX since 1993, went through Xenix, DG/UX, Solaris, NeXTSTEP before GNU/Linux started to take off, worked across Solaris, HP-UX, Aix, OS/X before GNU/Linux really took off.
To this day I don't care tmux exists, just open a couple of terminal windows.
If you are going to mention jobs across sessions, nohup does the job.