Dude if you think that someone might scrape your finger print from a random image post, recreate a physical model of it, hunt you down in real life, and steal your phone to unlock it… You probably should be seeking political asylum because you’re being hunted down by the Kremlin or a similar entity.

My point being, unless you’re wanted by a governmental power, a photo with fingerprints is probably not a real risk. Gotta make a realistic threat model, otherwise there’s no way to tell what’s reasonable privacy considerations vs. paranoia.