Hi Kai,
Thanks for using Tracks!
That is a good point, ct_tracks_social_site_list() would benefit from a function_exists() check, and I will add this in the next update.
For now, what you can do instead is copy the social-icons.php from Tracks into a “content” folder in your Tracks Child theme. Tracks uses get_template_part() to get the social-icons.php file, so once added to your child theme it will automatically override the social-icons.php file in Tracks.
Then you could completely cut out the backend and just add a list of icons in plain HTML to that file.