I actually did make a GDPR request asking Reddit to delete all my posts and comments, but they said that they can delete my account and personal data, but will retain content as it will then be disassociated. I repeadedly asked them to delete my conent but they told me that i had to do this before deleting my account! This is why I requested that they did not recreate the posts that I had deleted using that script. It seems to have done the job though