I don't disagree with you, I recall discussion about it years ago when I was living in Singapore, but we all have differing levels of understanding/awareness of these things and as long as there's doubt that the ST website specifically warned of this at the time they booked, I'd have a hard time holding them fully accountable.
Let's at least remember there was some doubt at the time that Brunei would go all in on Phase 2 based on potential economic impacts, and they did only announce it on Dec 29 coming into effect April 3 (today!), there is some room for sympathy here, but it's not a great deal of room.