I guess this is just moving the state from the cookies to the bookmarks, which is a user experience loss since most people don't use bookmarks.
OTOH most browser address bars would autocomplete to the full URL with api key anyways.
There's something satisfying with eliminating implicit/hidden app state/configuration. Perhaps you only get this satisfaction when programming in Haskell long enough. The dependency injection people get satisfaction from the complete opposite. Strange folk.
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