Once the PR for more permissive CORS support gets merged and lands in the popular servers there will no longer be a need for wefwef and other apps like it to proxy requests on behalf of users. I'm personally waiting to properly release my WIP client until then, as I really don't want to take on the burden and responsibility of proxying user data. If you're a developer you can check my current progress here, and here's a short video I recorded that is already very out of date.