I think it's great Edge and the Password app added autofill support for synced passwords; however, it's not for me. My family uses 1Password so my wife and I can share utilities passwords, we can help our young children manage some of their accounts eg recovery info, and more.
Edge Dev on Android does not respect that I configured 1Password as my autofill app. Edge stable (older codebase) does, as does Chrome and every other app installed. I don't appreciate that Edge Dev or Canary doesn't respect my choices here. Logging into sites is a pain to switch back and forth between apps and really makes me question why I continue with Edge if it doesn't let me be productive with my choice of password manager.
The considered autofill app should just work, so it seems Edge for Android is explicitly blocking access in lieu of it's own autofill. The Privacy and Security settings do not give me a choice either.