But it is not hard at all to try out betas. There have been KDE4 vm's
available for download that are updated regularly: http://etotheipiplusone.com/kde4daily/docs/kde4daily.html. People didn't
use that. There have been regular binary snapshot packages for many
distributions, easy to install on a vm or any old box you might have had
lying around. People didn't do that. There has been kde-svn build
(http://kdesvn-build.kde.org/) which makes it easy to keep up to date to
the minute. All these options have been widely advertised.
Saying "it's too hard to try out betas" is pure poppycock.