The company does not seem to be interested in the fact, Edge is still crashing on some devices when users are trying to manage their favorites or the fact that there are much more valuable browsers.
You just want to try Edge.
Windows 10 usually shows you a 'Try Edge' warning at an unsuspecting time and place. The alert is usually accompanied by a reason stating that Edge is better than "other" browsers.
If you do not want to see the message, you can turn off notifications with "Try Edge" quite easily.
Open the "Settings" application. In the "System Settings" group, select the "Notifications" tab and turn off "Tips, tricks and suggestions as you use Windows" or 'Get tips, tricks, and suggestions as you use Windows.'
Because the "Settings" application is constantly changing with Microsoft redesigns, if you can not find the notifications tab use the search of the "Settings" application home screen and search for Notifications & actions.
The above operation will turn off the "Try Edge" notifications you see in the Windows 10 UI. However, it will not turn off the notifications you see in other applications. For example, if you visit a Microsoft domain from Chrome, you will see a notification at the top of the browser suggesting that you try Edge.
The alert exists because the site knows which browser you are using and since it belongs to Microsoft, the company is forwarding this message to users who do not use the Edge.
As it seems Microsoft is clearly trying to recover the lost ground in browser it developed.