I know some guides recommend this, but actually this is a problem that was more typical of early releases, so now you don’t really need to use PowerShell to uninstall things, you can simply go through the usual uninstall route.
I like Edge but, to keep things short, it’s nowhere near as mature as Firefox. This is blatantly obvious when looking at the extension ecosystem; Edge is now almost usable for me, but not quite there. Of course I do use stuff like userstyles and userscripts, and most people don’t, so there’s that.
Also personal preferences play a not inconsiderable role.
Defender is more than enough, is free, functionally equivalent where it matters, and isn’t as disruptive of workflows as Norton.
The Internet looks at things like AV comparatives and synthetic benchmarks, and then figures out that an 88 is much better than a 65, when in truth the benchmark is designed to magnify insignificant differences.
Mind, I’m not saying there cannot exist security software that is better than Defender, however, there is a conflict of interest that plagues so called “antivirus software”.
Since they want your money, they have to prove their products’ worthiness to you, and that is too often done by including unnecessary, intrusive, or downright damaging features. And by flagging threats where there are none.
(Kasperksy is often touted as good, but it’s a Russian company and I am aware US security authorities have forbidden the use of their software.)
Defender needs to keep you safe with a minimum of fuss and that’s exactly what it does.
Two different things, tracking is for the most part invisible and kept that way.
Your computer trying to make things as easy as possible for you, down to making decisions for you because the average Joe wouldn’t even understand the question, is something that works for the most part, and is appreciated, until the software makes a choice you don’t like.
The rest is negativity bias, and history.
I would also add a couple things about Linux advocacy, but you know? I’ve been using Linux for so many years and any cool novelty factor has long faded to the warts of the reality of using Linux day in and day out. So, I guess the newly converted can go through the stages without my, err, spoiling the fun for them. Good luck!