Moving KDE to Extras would mean to close out any KDE application from Core. From a user's perspective this can't be in anybody's interest.
its both in the users interest as well as in the interest of fedora project for having fedora *core* only provide the default stuff
they also had to suffer a lot of flames for doing this. see kde-redhat.sf.net for an effort to provide upstream packages removing the redhat integration bits.
If RH moves KDE out of Core, this will set a "bad" political signal, which probably will be interpreted as "RH declaring war on KDE". This can't be in anybody's interest.
you are over dramatising this.