I hate MS's stance on privacy like anyone else, but I have serious doubts about your post. This would be a very big thing if actually true. Most likely thing that happened was that you started Edge yourself, then clicked on the pop-up that sometimes shows up (regardless of updates installed) asking you to switch to "recommended settings" which replaces your default browser. Yes, shitty dark patterns, but definitely n…
I don't know why you would doubt this. Windows updates have been doing this for decades, first with Internet Explorer when they were battling Netscape/Firefox and now (apparently) with Edge. edit: clarity
Not discounting your experience, just saying it doesn't match my own.