The problem with this article is the author distributing fake information in favor of the so-called "modern browsers" such as Edge or Chrome without giving you the full details behind that choice that Microsoft supposedly made.
Let's try to understand why Edge, even 4 years after development is still a poor browser just like Chrome. Both are made for home users and their role is to offer simplified, dumbed-down experience to the user while mining their browsing, search and computer data through various encrypted channels which was proven multiple times through 3rd party analysis.
Internet Explorer is still, to this day, the most secure and performance optimized browser among all the competition. I can't even imagine allowing Chrome to run on a RDS host with 40 concurrent users for that reasons alone.
Also, IE is very stable and has lowest amount of random crashes or freezes based on available information in environment of over 10000 endpoints.
It has the best group policy support and most important and functional features such as Active X controls, .NET, Java integration, ability to hook with additional software installed on the machine, custom zones and the list just goes on.
The browser is made for enterprise and every big or important company creates their apps and tools to work with it. I am not talking about your regular websites which are made by college freshmen who are wet about their new html5 / css / javascript or other skills.
The main problem is the reason why Microsoft decided to abandon IE, which is the result of Google leading in the big-data (telemetry) game and made their own data mining browser called Edge.
I am certain no system admin would approve use of those modern browsers which are here to obtain data from their users, dump them in the big-data database and use for marketing, research and sales purposes.
Therefore, please cease the Edge development and focus on important stuff, IE should get the version 12 because your team of kids fresh from university won't code a browser with half of IE 11 functionality in the next 10 years and you can mark my words.