The link is to an article published some time ago. The first viewing platform was in fact opened just a few days ago. Sincere congratulations to Brussels Airport management and to the local councils for their excellent initiative and cooperation. A breath of fresh air in this day and age.
It's a real shame that the country which has the greatest number of spotters, the operators of most of our biggest airports treat enthusiasts with almost total disdane, hiding behind the British mantra of "security is paramount" when in reality their mantra is "profit is king".
Absolutely! And the point is that facilities do not need to take valuable terminal space. There are plenty of options around the perimeter.