Microsoft edge's latest build version 134.0.3124.57, just added a whole new web-store for Android user unlike google.
Extensions are great for adding a tiny bit of functionality to a browsing experience without dedicating an entire app to run in the background. For instance, some users like to use VPNs securely tied in from the browser itself rather than running the full-scale app.
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Chrome for Android doesn't have extensions, but Edge now has a whole store