How Do You Even BUILD a Hydraulic Castle?

Well, any suspension of disbelief or emotional involvement I've had in this game is now totally gone, killed, and burned.  This is just total nonsense.

As soon as I beat the Elite 4 and witnessed N put the finishing touches on his win against Alder, I was shown a cutscene of Team Plasma re-entering the story.  There is no way to describe what happened without losing something in the transition because I'm so shocked and confused at the absurdity of it all, so click this to see it yourself... Go ahead, I'll wait...

...

Apparently what their new, genius, totally-going-to-work-this-time plan entails is to build an underground castle beneath the Pokemon League HQ, then to have N become the League Champion (which somehow helps them in their hostile takeover), and finally to smash the castle up through the surface to take the League hostage.

This is something that has just happened.

Ignoring obvious questions like what ridiculous cost and time investment would go into building a castle like this (and inventing a new kind of hard-as-diamond substance that could withstand this kind of crushing force) as well as how the hell they have been able to do this without the people from the League HQ just looking out their windows to notice all the obvious construction equipment necessary for this undertaking, I still have to ask why building the underground castle would be preferable to just invading the Pokemon League in general?

The Greeks fought and won the battle of Marathon, they didn't build a pyramid next to the Persian camps and claim victory.  The English drove the French away at the Battle of Agincourt by shooting them with their bows, not by baking them a better cake.  Richard the Lionheart drove off Saladin's footmen at the Battle of Arsuf by sending in his cavalry, not by making a better science project than him.  You don't win wars by building castles and you can't take over the Pokemon League HQ just because you have a more impressive building!

Once again Team Plasma is caught throwing ideas at the wall and checking on what sticks.  I think I need to lie down for a bit...