Disabled radio buttons are editable

Thank you, Peter, for the prompt response!

The disabled fields will lose their values on Save! I'm getting the values of these fields from an API and saving them in the DB, and I'm using these fields to show the values ONLY to the CMS users.

If the CMS user hit the Save button, all the disabled fields will be reset and lose their values, UNLESS there's a way to pass the original value of the field in the std option.

Do we have a way to pass the current field value in the definition of the custom field? Something like:

'std' => this.value,

You can run this code once the admin page is loaded to make the readonly radio buttons uneditable:

document.querySelectorAll('input[type=radio][readonly]')
        .forEach(item => item.addEventListener('click', e => e.preventDefault()));