Others were quick to say that they only use social features with real friends and family. I'm not sure why that would be a "but..."; it's the whole point of those features.
Finally, I think Fediverse users are generally more protective of their privacy than the general population.
If you have a fediverse account, you can quote this note from your own instance. Search https://cosocial.ca/users/evan/statuses/115792875702140981 on your instance and quote it. (Note that quoting is not supported in Mastodon.)