Operating systems now to seem to be adopting some form of Linux no matter what, and it’s nice to have a universal platform within every machine. Mac has the terminal, a powerful tool that is just a slightly less powerful brother to the true BASH. Android having its own terminal and being made from the kernel itself. Now, windows is adopting Linux too, but to an immensely high degree. They have adopted almost on schedule updates, added their own rendition of the terminal, and now
Entire Linux environments can be run inside windows. One user even managed to run Ubuntu in Windows 10, not just the terminal version and not even in a virtual machine but two unique operating systems (and kernels) running in tandem. So these little releases are able to be both the dominant system and a feature.
If it works fully side by side then Windows security could also be enhanced, running antivirus from an environment immune to the majority of viruses around to remove a threat while Windows is online. The possibilities are endless… and that’s why it was removed in the S version would undermine all their work.