Microsoft Edge isn't just available on Windows, it's also there to be used on macOS and Linux, too. And yes, that also means you can put Microsoft Edge on your Steam Deck if you'd prefer it over Firefox or Google Chrome.
Microsoft also doesn't just have the singular, stable version of Edge available on Linux, either. The beta and dev insider channels are also available for download if you like to be closer to the bleeding edge. I use Edge Dev on Fedora and it is fantastic.
