This increases their user base. Every time you install WSL & Bash on Ubuntu on Windows, you are getting a full Ubuntu distribution.
The only user base that shrinks is the Linux Kernel user base; Ubuntu and Linux are two separate concepts, and WSL demonstrates that they are in fact fully separable.
The only user base that shrinks is the Linux Kernel user base; Ubuntu and Linux are two separate concepts, and WSL demonstrates that they are in fact fully separable.