> “We worked closely with Valve and the Xbox Cloud Gaming team to bring support for Xbox Cloud Gaming (Beta) with Xbox Game Pass Ultimate through Microsoft Edge Beta for the Steam Deck,” says Missy Quarry, a community manager for Microsoft Edge.
Then there is a tweet which links to this reddit post. That reddit post has you install the Microsoft Edge flatpak. If you search using DDG or Google for "edge runs on steam deck", you will see that there are multiple news articles reporting on how Microsoft has worked with Valve to get Edge running on the Steam Deck. All of these use the flatpak mentioned in the post. I can absolutely see why the author of the flatpak would want at least some attribution instead of Microsoft announcing that they alone have gotten Edge running on the deck.
Also, it is worth it to read the Wikipedia page on flatpak if you don't understand what flatpak is. It is a really important technology if you want to understand why the author is mad.
[1] : https://www.reddit.com/r/MicrosoftEdge/comments/th77w9/micro...
[2] : https://www.reddit.com/r/MicrosoftEdge/comments/th77w9/micro...