@hansw@mastodon.social if someone replies to our post, your original post is not indexed, only their reply is indexed. If you reply to their post, because you as the author chose not to be indexed, it will not be indexed.

Here's the background issue on scalability, for your interest.

Let's say someone who has been indexed for a long time decided that they no longer wants to be indexed. We will have to search for their presence in all the posts that they are mentioned in. We can't do this at scale without an index, as otherwise it means scanning through millions of rows. We can't really create indices for mentions either, as this index's only use case is to help speed up unindexing of user's posts in mentions.