Can you save text files that you're looking at in Edge yet? Like if you navigate to a URL that goes https://foo.com/blah.txt can you hit Ctrl+S or right-click on the text page and save the document? The last time I looked at Edge the answer was no.
I guess that most people who know that you can save web pages to your disk (and make use of that feature) also know that you can disable telemetry (and make use of that feature).