The problem with edge has never really been the rendering engine itself. It's always been the UI and ancillary bullshit.
As a prime example, for the longest time (I haven't used Edge in yonks so I don't know if they finally changed it) there was this "feature" in edge and IE that would turn phone numbers into clickable links so you could skype people from a web page (or presumably on a winphone, just dial them). You could turn it off in IE's internet options if you didn't want to to do that. Edge, however, didn't listen to those settings, and just did that bit of formatting, whether you liked it or not.