@Ca_Gi
This behaviour depends on your native app.
If yu set your device to open specific links in a chosen app, you don't have to go to the browser. The app can check if the URL is within the Fediverse or not.
Why is this step necessary? mastodon.bida.im might not be the server where you are registered, so we need to redirect you to your home server first. Don't have an account? You can sign up here
mastodon.bida.im