it's also indicative of company culture if people with this type of disrespectful approach to interviews are allowed to continue without reproach. Remember that this person wouldn't just be joining a company where there's an asshole, they'd be joining a company that tolerates open assholishness.

Of course, this is predicated on the assumption that OP's perception of events was reflective of reality. Sometimes high-pressure situations can also make people over-sensitive (I know it can for me, at the very least).