Why does nobody here ever recommend Fedora to noobs?

It does happen. It's simply not the popular choice for the following reasons:

• Fedora and its predecessors were until relatively recently simply more cumbersome in use compared to Debian and Ubuntu;
  • There was a time (like at least over 10 years ago) in which package managers didn't necessarily know how to resolve dependencies. However, Debian's package manager at the time did it earlier than the package manager found on Fedora's predecessor. Hence, this was a clear reason to prefer Debian or Ubuntu over Fedora('s predecessor).
  • Freezing packages and offering stable releases with two years of support (like Debian does), has been and continues to be a very pleasant way to run your Linux OS. That's why, even in the past, Fedora's slower cousin (i.e. CentOS) was very popular (though being RHEL clone didn't hurt either). Fedora, on the other hand, offers a semi-rolling release cycle of 6 months with only 13 months of support since release. With semi-rolling release, I refer to the fact that some packages are frozen and some are not frozen. Hence, you should expect daily updates. Access to the latest and greatest software is great. However, every update is a possible cause/reason for something to bork/break on your system. It's therefore unsurprising that some prefer the predictability found on other distros. Though, for the sake of completeness, one has to mention that Fedora Atomic does a great job at tackling this problem; especially the uBlue projects.
  • A couple of years back, Fedora switched in quick succession to systemd, Wayland and GTK4. Thankfully, I didn't experience this for myself. But, from what I could gather, it was a mess. Users, perhaps rightfully so, questioned Fedora's decision-making. While Fedora wasn't particular loved, this didn't help to retain new users, nor did it help to cultivate a trusted environment.
• Due to the previous reason, Fedora has not particularly been a very popular distro. Hence, troubleshooting your issues through Google is less straightforward compared to Linux Mint or Ubuntu. Additionally, as Fedora's user base has primarily been more experienced users compared to the ones found on Linux Mint or Ubuntu, it's unsurprising to find less discussion on elementary stuff. Simply by virtue of Fedora's user base already being past that.
• Fedora, like Debian and openSUSE, offers a relatively bare bones experiences. It does make a lot of sane decisions for you. However, it doesn't focus on being particularly GUI-friendly or newbie-friendly. By contrast, distros like Bazzite, Linux Mint, ~~Manjaro,~~ MX Linux, Nobara, Pop!_OS and Zorin OS (amongst others), do put thought and effort into streamlining the experience as much as they can; especially for newer users.
• While Fedora is ~~primarily~~ community-driven, Red Hat's influence is undeniable. As such, people that hate corporate interest and/or Red Hat and/or IBM will favor the use of Arch and Debian.

Having said all of that, I've been using Fedora Atomic for over two years now. Heck, Silverblue was my first distro. And it has been excellent so far. Furthermore, with Bazzite (based on Fedora Atomic) and Nobara (based on Fedora) often mentioned in conversations regarding beginner friendly distros, even if Fedora itself isn't explicitly mentioned, the ecosystem is clearly healthy and will continue to flourish.