Uninstall Button for Edge Chromium is greyed out. Is it intentional?

vineydhiman Thanks for reaching out. 

Rohit Yadav and Jussi Palo are correct! Here's a little more information about that:

• On Windows 10 PCs, when you receive the new Microsoft Edge via Windows Update it will replace the legacy version of Microsoft Edge on those devices.
• PCs running Windows 7 or 8 originally shipped with Internet Explorer. Because of this, when those devices receive the new Microsoft Edge, it will run alongside Internet Explorer; it does not replace the browser. For those who choose to uninstall the new Microsoft Edge, Internet Explorer will not be affected.
• Microsoft recommends the new version of Microsoft Edge for better performance, privacy, security, and productivity.

Fawkes (they/them)
Project & Community Manager - Microsoft Edge