EWL
Garuda clients aren't happy?? Garuda clients wouldn't know how to spell 'happy'!
I'd guess that the true motivation for your post is that travel-agents-who-miss-out-on-commission aren't happy!
In the end, Garuda clients don't matter a damn, travel agents don't matter (judging by my recent - and first ever - experience using them, they're fast becoming an irrelevance), and BNEA320 certainly doesn't matter.
The only thing that will matter is to see how many price-sensitive passengers take up the offer of a new operator on the route.
Oh...the other thing that will matter is the mood of a certain Volcano in the vicinity of Bali.