Looking at the lemmy documentation I assumed they wanted form data and sent that along with application/x-www-form-urlencoded for the Content-Type.
As you mention what they actually want is JSON and application/json Content-Type.
Thanks for the info!
Not a backend dev, but it would seem like this could possibly be partially solved by purging data past a certain age that falls into specific scenarios:
Also, deleting/removing content doesn’t really seem to do much currently as you still get all the info back from the server and it’s up to the frontend to not display it. I’m normally of the opinion of it you want to delete your comment it should be properly deleted (moderation removal being a separate issue).