This reminds him of his dad. Andrew Ryan was definitely 'aggro'... he would call hypnotizing a city of insane mutants to kill Jack for accidentally trespassing aggressive and pushy.

"I guess they are... aggro." he concludes. "And I've never... had Polish vodka. There was only Russian vodka in Rapture."

Personally he thinks this conversation is going very well in comparison to their last one. At least they're agreeing on something.