Hi JJ. I'm Greg, an Independent Advisor.
See fixes for Edge opening at Startup:
https://thegeekpage.com/how-to-stop-microsoft-e...
https://support.microsoft.com/en-us/microsoft-e...
https://www.gamerevolution.com/guides/652013-wh...
https://www.youtube.com/watch?v=B3nFJWPtpR4
If those don't help or stick, make sure it's removed from all five places where Startup items can hide which are covered in Step 4 of this checklist: https://answers.microsoft.com/en-us/windows/for...
If you want to report this to Edge Developers you can choose the Edge Hub (three dots to right of URL address bar) then Help & Feedback, then Feedback form to fill out. They will not even see it here, as this is a tech forums where mostly volunteers try to help others with their problems.
I hope this helps. Feel free to ask any questions. Based on the results you post back I may have other suggestions if necessary.
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