However, in my opinion Mint seems rather outdated
That's because Cinnamon is actually a fork of an ancient Gnome release that has since gotten much fewer enhancements compared to Gnome (and Plasma).
I’d have to install media codecs via terminal first which suggests that Fedora is for experienced users.
That is factually wrong: https://fedoraproject.org/wiki/Releases/38/ChangeSet#Unfiltered_Flathub
Also university wifi eduroam doesn’t work on Fedora for me because legacy TLS connection is not supported in Fedora (at least I couldn’t get it to work).
When the WiFi relies on insecure encryption, the problem will only be delayed on Mint because Mint's underlying Ubuntu core is just older. Once a newer security policy comes to Mint, it will have exactly the same problem. The actual solution is for you university to update the WiFi encryption. In the meantime, according to https://fedoraproject.org/wiki/Changes/StrongCryptoSettings2#Upgrade/compatibility_impact the security defaults of Fedora can be rolled back to an earlier level quite easily.