Not true. When they bought it, they fully expected to start service with that plane. They even bought a new seating package for it which they sent with it to Malaysia. But after that, a much better aircraft investment appeared, that was then attainable, so they wisely took it.
At the time they bought 705, when the options they'd been looking at from other airlines were in the $5-6 mill range, 705 looked like a good way to get the airline up and running. At the time that they bought it, all plans were for starting the route with that plane. Then a far superior option appeared, so they took it.
So far, the combined costs of 705 and 706 are less than the purchase prices they could get from other airlines prior to buying 705.
What's wrong with that?