The original plan was to embed the launchers inisde the superstructure so it was actually meant to be cut anyway.
Well, from what happened with Klewang, I'm assuming that it's not that they don't want to.
On the other hand, Golok does need to prove its worth first so this fit and firing test of the NSM will be crucial for its future. I'm really looking forward to see it in full gear with radar and other electronics as well as some proper CIWS to replace that old 20 mm manually-operated cannon.
What
@Anmdt meant was not for the helicopter to land there. It's vertical delivery/transfer which means the helo will hover above and behind the mast while lowering the cargo.