That was weak only because you could tell it was going to happen.
And then chewie just happens to be able to shoot him when didn't this nikka ren stop a beam in the air in the beginning of the film?
Poor writing
1. Didn't even know Chewie was there.
2. Ren would have had to somewhat focus to stop that bold, he was clearly not in a focused state then.
3. Dude was in the middle of a battle when he stop Poe's shot. In a battle, people usually expect to be shot at.