In Chinese Mainland, macOS users can access all features(like synchronizing user data) of Edge without a VPN, while it's impossible when using Chrome because of the GFW blocked majority of Google services. Therefore, Edge is becoming more and more popular in China after it turned to use Chromium kernel and it using less energy and less memory cost.
And China has a lot of people using Alfred, like me. I use Edge as my primary browser now, sometimes use Chrome, and rarely use Safari.
Although we can using some workflows to search Edge bookmarks, but it's more convenient if it's a built-in function in Alfred. And it's not difficult to implement in Alfred because Edge is sharing the same way of storing data with Chrome.