I was creeped out by dutch in chapter 5.

This scene is where you can really see a glimpse of RDR1 Dutch.

"Dutch strangles old lady"

High honor Arthur: What are you doing? Dutch!

High honor Arthur: What was that?

Dutch: Horrible old crone

High honor Arthur: But you killed her.

Dutch: She was going to betray us Arthur, Couldn't you tell?

High honor Arthur: No.

High honor Arthur: You keep killin' folk dutch.

Dutch: I am just trying to make sure that some of us survive Arthur, Now.. Shall we proceed?

There's a slight uneasy change of tone in the "Shall we proceed?"

Also when he drowns Bronte and feeds him to the Gators in chapter 4, he seems to get some sick enjoyment out of it.

Dutch in RDR1 refers to killing people as a sport.