I vote for keeping it. But it might be worth considering whether the file should have some sites included by default, whether remmed out or not, as a sort of quick-start guide.
A quick start guide is really well worth doing. There is a daunting amount of information for a newcomer to Symbiosis, some of it very detailed, some alarmingly sketchy.
Splitting the documentation into user and tech ref isn't necessarily making things better either, because the info you need is now more fragmented.
Links to the relevant bits of tech ref direct from the user manual sections would be helpful. And more examples in the tech ref would help.
I often find myself searching this forum for fixes to problems instead of referring to the docs. That isn't how it should be! When something useful appears here, it should go into the docs.