Well, I thought it was interesting so I looked into various ways to make changes to the options page. To be honest, I’m not comfortable hijacking the ACF callback function because that would mean that every time ACF updated the “View” for the options page that you’d need to rework anything that you do.
I came up with this https://github.com/Hube2/acf-filters-and-functions/blob/master/customized-options-page.php. This method adds an action both before and after the ACF action so that you can capture the output from ACF and make changes to it after.
