I am not a hardcore core developer... I am an ok programmer but I am mostly a configurator / integrator, and I am lazy.
Hector, you've explained your rationale for sticking for now with P4 and I appreciate that you have a set of tools that work for you.
Andreas has been trying to do some heavy duty programming and he has hit issues that are true of any major new release in which we have had to change the way old versions did them in order to keep up with the current (and quickly evolving) ways of doing this with JavaScript frameworks.
There are a lot of other people who have deployed Plone 5 successfully. They're just not going to get involved in this kind of pissing match because it's just not productive. Help us fix things if you think they're broken. Complaining here and trying to scare off newcomers to Plone or Plone 5 is not useful.