No.
That singular word rang like a bell in Thomas's mind after experiencing the fall of Popolis.
The scene brought back memories… unpleasant ones to boot.
The screaming, the crying… the hopelessness that he felt that day as he watched Popolis be devoured by the Labyrinth returned to him, leaving him a complete mess.
Even as the shadows had devoured him, he did nothing but wish that it was all a lie, that everything was a bad dream.
Maybe that was why despite noticing discrepancies early on, he never said anything.
He wanted to live out the rest of his days in the city he'd grown up in.
So how could he not fight back after he'd been forced to confront the truth?
At that moment, Alex was like his worst enemy, as bad as the Labyrinth that took everything from him.
So as he aimed his gun at Alex, prepared to shoot, he sought to gain some sort of reprieve.