I don't think that active defence systems are the ultimate future. And I also don't read this in the article. There will be a mix of active and passive systems.
The main problem of the new western tanks is that by only increasing their passive defence capabilities they become too heavy. Sometimes they already reached this frontier. Look at the Kosovo. We send our Leopard II A5 back home and replaced them with Leopard II A4s because of the bridges there. With the inclusion of modern active protection systems the western states are able to protect their tanks better without going too heavy and without loosing their passive armor capabilities. Especially at the weak points that's a good possibility, we already do that by using an ERA like system on top of our Panzerhaubitze 2000 against bomblets.
Sorry for a little bit off-topic but the T-72M1 (And other T-72 versions) is a good example for that theory. They increased the passive armor by putting some extra ceramic armor onto the turret front. But soon they learned that too many weak points remained and that they were not able to protect them without making the tank too heavy for the needs of the Warsaw Pact army. That's one of the main reasons why they developed so many active protection systems. Naturally western tanks weren't that limited in weight and were able to go on with passive armor. But by now we are at the same point.
The main problem of the new western tanks is that by only increasing their passive defence capabilities they become too heavy. Sometimes they already reached this frontier. Look at the Kosovo. We send our Leopard II A5 back home and replaced them with Leopard II A4s because of the bridges there. With the inclusion of modern active protection systems the western states are able to protect their tanks better without going too heavy and without loosing their passive armor capabilities. Especially at the weak points that's a good possibility, we already do that by using an ERA like system on top of our Panzerhaubitze 2000 against bomblets.
Sorry for a little bit off-topic but the T-72M1 (And other T-72 versions) is a good example for that theory. They increased the passive armor by putting some extra ceramic armor onto the turret front. But soon they learned that too many weak points remained and that they were not able to protect them without making the tank too heavy for the needs of the Warsaw Pact army. That's one of the main reasons why they developed so many active protection systems. Naturally western tanks weren't that limited in weight and were able to go on with passive armor. But by now we are at the same point.