Ad 1: Do anyone really need LTS for desktop OS? Especially since it's quite experimental distro so rapid changes and experimental solutions are part of what Fedora is.
I want a workstation, not a system that's continuously having things begin/stop working
Fix A, breaks B, etc.
I also want to be able to install something slightly older for not so great hardware and have it be useful.
As for the "experimental" and "rapid changes", I can assure you it is far more stable than Ubuntu by miles and miles. Just don't install it at the first day of its release; wait for a month or two.