Like Reddit is? e.g. for Google, or Bing (shudders), you know. Search engines. One of the ways many people around the world interacted with Reddit was looking up solutions, discussions, or similar from a search engine and NOT on Reddit itself. Is that possible in this thread of the fediverse?
At least in other Fediverse services you can’t search post content in searches, only hashtags. It would be desirable that this would be the case for all federated services.
At least that it could be configured on each server and that the other federated servers would respect the privacy settings of the servers on which each post was published.
It may be a little difficult to implement, but it is desirable to maintain that philosophy with respect to privacy.
In any case, there have already been cases of bots (crawlers) collecting data in instances of the Fediverse. Although measures can be taken and at a legal level, at least in Europe, it is reportable, technically these can be done, outside the Law.