When you upgrade from W10 to W11, Edge is automatically your default browser.
Whenever you install a new browser on W11 Edge is automatically made default again
If you search something in the global W11 search bar, if it’s a website it ignores default browser and opens in Edge. Some people found a workaround for this and made it use https://(for default browser) but Microsoft patched it so you have to use Edge
Extremely pushy notifications when visiting a web browser’s website such as Chrome - “This browser is so 2008…”
When installing Edge on a specific type of Linux distro (I don’t remember which), Edge is automatically set as default WITHOUT ASKING THE USER!