There's quite a lot of things that can go wrong there compared to the less adventurous Linux experience of, say, Ubuntu LTS on a Thinkpad/XPS/Zenbook.
Fedora on Thinkpad (including Wayland) is very nice, accessing Synology via SMB or even AFS works very nicely. If I was feeling adventurous and had a need for remote block devices, I would try iSCSI too.
RHEL shouldn't be like that. It should install with minimal surprise or weirdness. I recognize the author's complaint about the "Done" button because RHEL uses the same installer. I have a similar complaint along those lines. The system prompts you to set up a non-root account, but you have to click a checkmark to make this user an administrator (ie. in group wheel). Unless I'm completely misreading the target market, making the first user created an administrator should be opt-out, not opt-in. It's not a big deal, but it seems careless.
As for Fedora, I don't know. I haven't had the kind of experiences the author describes when installing Fedora, but Fedora systems have never been stable enough for me to stick with. They install okay, then a month or two later you run an update and suddenly your desktop's max resolution to be 640x480 or audio or wifi no longer works. Maybe it's because I've always used LXDE or XFCE instead of GNOME, but oh god I can't stand GNOME.
Some things are going to be tough unless you're some kind of guru, because few would've recently tried it and you may hit a brick wall before long.
Sounds like openness to weighing up other distros might have helped the author too (not to dis' Fedora!)