I'm sure you can find good reviews from shills, people with a low attention for detail or people with very basic needs. Even if you disagree with my thoughts on Edge reviews - the Edge browser market share speaks volumes: Nobody is using it.
Not sure if I did something wrong but my experience was OK, nothing amazing, but also not total shit like you say.
You also mentioned that you got one extension that you needed, uBlock. Great. How about these: Quick JavaScript Switcher, Don't Track Me Google, Stop Tracking me on Reddit and Google Search Filter. That is just a sampling of the non-developer extensions that I use.
Also, if I go to one page that doesn't work in Edge that's the end of my time with Edge. Since that happened almost as soon as I tried it out, I stopped trying. Despite that, I do open it from time to time to see if it got less crappy and many times I get a bunch of popups from Microsoft begging me to do more with their stuff. No thanks!