I do agree with that; in an environment like that, you can do that. But remember it only has 91 Litres to begin with, so planning a 2.5 hour nav with 45 minute reserve allows you to leave out 20 KGs at most. And that is if you get it precisely right and don't err on the side of caution. I predict that many of these will be flying over weight a lot. (Same as those training 152s, to be honest, even at half fuel.)
But my main beef is with it being used as a private aircraft. It just doesn't stack up to the competition where you can get the endurance of (even bigger) full tanks (very handy in a country like our with lots of airfields but not a lot of them with fuel) with greater speed at lower fuel burn and still have more than 200 KG usable for people, bags, safety and survival equipment, etc.
If I ran a Cessna GA school, I would certainly consider the 162 for circuit and training area operations. But as an RA aircraft, I'd pass on it, both for school and private use. Especially at $150K! (So more like $180K when you get it here and pay shipping and GST?)