that the crane jib should have been lowered as it was not lit albeing the actual crane itself was. I would hope that the crane was not positioned in any way to encroach on any of the std helicopter routes.
The crane operator did their job by following protocol and issuing a message saying "crane here, stay the
away" (otherwise known as a NOTAM).
The helicopter infringed (for whatever reason the AAIB find) the NOTAM and suffered the consequences accordingly.
Calling for no cranes, lowering of cranes or all sorts of other stuff is about as helpful as the knee-jerk reaction from one of the MPs to reduce / eliminate helicopter flights over London.
Aviation and obstacles have peacefully co-existed for years with relatively few incidents, sure lessons will be learnt from this event, but I don't think we need to start placing some extravagant new measures on either the obstacle creators or the aviation community.