What's the point of GET with verify_email?

[engin-can]

I noticed signup request returns verify_email in response.
I was wondering why we have the separate GET request below prior to POST to verify email.
Can't we rely on signup response if activation is required?

    resp = client.get(
        headless_reverse("headless:account:verify_email"),
        HTTP_X_EMAIL_VERIFICATION_KEY=key,
    )
    assert resp.status_code == 200
    assert resp.json() == {
        "data": {
            "email": email,
            "user": ANY,
        },
        "meta": {"is_authenticating": True},
        "status": 200,
    }
   
    ```

[pennersr]

That GET request is used to obtain information on the email verification key. For example, whether or not the key is valid at all, what user/email is involved. Calling this is not required.