I mean that’s every web site all the time though. The owner/admin can always just delete it.

Technically I could. But as with mastodon.world I have made a promise to ensure continuity by creating a team of sysadmins and moderators with access, and making sure it can be transferred to them might I get hit by a bus, or get bored of this.

But I hope there will be a feature to export your posts soon so you can create your own backups too.