They are all very resistant to change. Although... Alex might come to be surprised by Strand in the future. Not that Simon's going to point it out right now. Not unless she asks. He does, eventually, start to at least accept something is going on. Even if he staunchly refuses to accept any suggestion of the paranormal. That wasn't the important part of their conversation right now anyway.

"The painful one. He's too... bright. Too loud. Too many eyes."

He's talking about the angel.