I’m not really expert in this topic, but as far as I know tails is amnesiac os that forgets everything on reboots for example. Both whonix and tails also routes your traffic through TOR which helps hiding your identity.

Concerning other mentioned distros and also security wise, this comment explains it lot better than I would: https://lemmy.zip/comment/15305364

Yeah my bad, you’re right. I got too stuck on tails, which is in my opinion more focused on privacy than security, and ignored everything else.

You’re confusing security with privacy. While distros you mentioned are great for preventing ISPs and governments from spying on you (privacy), they’re not really any better at preventing hackers from exploiting your vulnerable web server than fedora (security).