I'm not obsessed at all. It is a VFR arrival departure procedure from helipad to helipad
no, it is a WP to WP arrival/departure procedure and XA290 clearly gives you the history of the procedure and why it came to be - it is entirely legacy as I suspected.
Sadly, not updated for the modern age other than changing the WP names and designed for non-nvd night letdowns where a big flashing light on a rock would be a good way of confirming your position.