Expect WSL to be scuttled in the future due to low adoption rates. It is an obsolete non-starterwhose developers dislike GNU/Linux and whose target audience is Microsoft fans, who also promote it the most (repossession tactics).
Summary: Bribed media and media with Microsoft's de facto moles in it is bombarding us with baseless hype about WSL, a 'distro' almost nobody uses; expect all that PR money to be going down the drain because GNU/Linux users are smart enough to install real distros and run a proper virtual machine, not Microsoft's controlled (EEE style) blobs from the "Store" (DRM)
Because digital connections in third parties aren't assets; they endow another party with tremendous power over people (e.g. MElon getting to decide who can and cannot reach people or what messages to "dim down")
Narrowing down to desktops and laptops, and judging by Web requests that go through Clownflare, many people there use GNU/Linux or Google's 'bastardised' version of it (with spyware preloaded)
From what we can gather, the tram ticketing system does not use Windows; we never saw it crashing or rebooting (or showing some Windows logo) in decades, so we assume it runs some kind of Linux