YSK That if you delete your lemmy account, your comments/posts made on other instances will remain there forever.
So say I make an account on lemmy.world and post a bunch of stupid comments around other instances then decide to delete my account because I'm ashamed of them. After I delete my account, a copy of all those comments I made on other instances remain on those instances as a "shadow copy." There isn't any way to actually delete them all. The copies of the comments/posts on your home instance will be deleted
tldr:
Don't say stupid shit on other instances you'll regret later! They never leave that instance!
Why YSK: so you can think carefully about what to comment and post.
I migrated from beehaw. You can see my previous post history here: DM_Gold@beehaw.org
I think after recent example of beehaw defederation it's possible that after instance defederates you lose control over your comments as they don't synchronise anymore.
Yes you should be able to edit the comments. But those edited comments will remain in those other servers. Also if you make a ton of comments do you really want to edit them all?
There are issues like this. And Lemmy doesn't seem to delete cached content after some time.
So text content takes something like 25gB just after 1 month on my instance. And it's not because of what we post, but just because of cached posts from communities on other instances.
So there should be an enhancement on this with the ability to delete automatically cached content after some time.