I guess we can do it by ourselves, i have more time so i can do it too. Coz if i read it right, the script works even if you're not the OP just by copy pasting the script in developer tool window. The main problem is what are the threads need fixing.
The script only works for posts made by the logged acount. You can't just run it on a random topic and expect the images to get fixed for everyone, the author needs to that himself.