Hairy, totally agree with your comments and nor should the blame be attributed to the use of bi-fold doors but they were a contributory factor. A take off and departure point underneath any form of overhang is going to end in disaster at some point. The pilot clearly lied to the board of enquiry given the video evidence and this whole issue was totally avoidable. I still question this type of door regarding the proximity of rotary use. If the helicopter was parked further away this accident, arguably, would not have happened. The fact the pilot probably didn't do any after take off checks or a look out turn merely emphasises his poor airmanship.
h