Since it takes quite a while to disconnect a bank account in GFM, after the user clicks on Agree in the modal it stays there with the Agree button disabled and the Disagree enabled ... and does nothing for a while, leading the user to believe that something happened and maybe try to click on the Disagree button ... So, I think a loader there will prevent the user from doing anything weird while waiting.
Since it takes quite a while to disconnect a bank account in GFM, after the user clicks on Agree in the modal it stays there with the Agree button disabled and the Disagree enabled ... and does nothing for a while, leading the user to believe that something happened and maybe try to click on the Disagree button ... So, I think a loader there will prevent the user from doing anything weird while waiting.