This is something they actually got right; it's one thing that was terrible about IE and the old Edge, and that I'd bet was subconsciously turning many people off (in my case, consciously making me want to tear my eyes out). If you can't see the difference, open dev console on the screenshot and run:
document.body.style.zoom = 1 / window.devicePixelRatio
If this doesn't work in the new Edge, try in Chrome (not sure if Edge supports this zoom mechanism). You should definitely be able to see the difference in sharpness.Edit: Maybe also worth mentioning, Firefox's bold font rendering is one thing keeping me away from it. Lack of the above zoom mechanism is another. Not sure if I'm alone in these.