Would this be useful for Fediverse threads? Again this doesn't rehost content. It is basically just a 3rd party client for viewing threads. If you delete the thread, it can't do anything with it. People can't share the spooled post with other people, not really. The best they can do is send you a link to spooler with the url of the thread already in it and you press "spool" -- if you don't have permission to see the thread (bc you are blocked or whatever) it won't work