https://wccftech.com/microsoft-says-you-cant-uninstall-microsoft-edge-browser/

The new Microsoft Edge browser was released to the public earlier this year. In a phased rollout strategy, Microsoft is installing the browser on Windows 10 devices in several stages, with an option available for users to install the new browser manually. When you install the new Chromium-based Microsoft Edge browser, it replaces the previous (legacy) version of the browser on the device.

In an updated document, the company has now mentioned that users won't be able to uninstall Microsoft Edge browser.