or... user wants to open in Edge.
EdgeDeflector just changed microsoft-edge links to https links so they would open in the browser the user chose. Users had to choose to install it.
Firefox and Brave just added microsoft-edge to the protocols they supported. Users had to choose to make 1 of them the default browser.
Imagine if Apple tried this. People would riot.
Anyway, I feel like the bigger problem is that Microsoft does not use https to open some simple websites. And people, including me, are upset about it. If they just used https instead of microsoft-edge, we wouldn't have any of those problems and everybody would be happy (probably excluding a hand full of people at MS). They could still use their own protocol to open some Edge-specific setting page or whatever.