Alamo isn’t scary
It’s hard to take Alamo seriously as a threat because he’s not cold blooded. He doesn’t seem to be a very good business man either…
A real gangster would have killed Rue a long time ago (not that she adds much value to the organization as it is). Any suspicion of a rat in a new member of the crew is a liability.
Additionally, he had Laurie’s whole crew surrounded, and they had literally shot one of his guys and robbed him. If you’re not going to kill them then, you’re not going to kill them. Laurie met him at his place with a business proposition (no idea why she would do that unless she knows he’s soft). I would accept him listening to the proposition, killing them, and running the entire operation without them.
Im not a violent person but damn…did anyone really think he was gonna knock her head off with a polo club? What a weirdo.