Ubuntu has a history of doing things that don't go anywhere: upstart, unity, their phone thing. Fedora has concentrated on being a solid, traditional Linux desktop. If that's what you want, Fedora could be it.
Not everything is black and white, and while Ubuntu has failed in some aspects, it succeeded in others. Also, they are not hesitant to admit a failure, upstart is a thing of the past with Ubuntu using systemd, unity and "their phone thing" are being discontinued with focus shifting to the Gnome desktop and the traditional PC/Laptop/server market.
If you consider pulseaudio, systemd and not being able to play mp3 traditional. Also, they used to fuck with encryption in some way, not sure if they still do it.
In the end, do you trust more Poettering or Debian or Ubuntu developers?
Only a little sarcastic; RHEL and Red Hat's historic treatment of CentOS had a lot of echos of Oracle's treatment of similar projects. They've gotten a little better in some regards (now own CentOS and seem to care about it) and worse in others (the of marketing and politics instead of merit).
What? Red Hat didn't treat CentOS badly: they happily let people make trademark-less respins of their OS per the license and didn't try and stop anyone from doing so.
(Disclaimer: worked for RH around 2003-6)
Obviously Yggdrasil isn't using systemd and that doesn't change anything.