Darn, I'm usually the devil's advocate.
I must strongly disagree with this statement. I recently retired from my position with my state as a network security specialist. I did, amongst other things, Cybersecurity and Identity Access Management.
The problem with Edge, in my personal opinion, is that it does not offer the same security features as (some) other browsers. Look at the built-in security options in Vivaldi, Firefox, and Brave, for example. Should one choose to use them, they provide much stronger protection than Edge can.
I realize that the average person just uses their browser as it is cofigured after installation but the average person also clicks on links in emails from unknown or suspicious sources, or plugs a thumb drive they find somewhere into their computer to see what's on it. (Trust me, I know we did a "test" at work by leaving thumb drives around the building with a script to report system details of the users that did so. Results were amazing!)
So, in my opinion, Edge is inferior to (some) other browsers.