TBH you don't usually have up front debates with people you just meet in person. Probably wouldn't have come up.
I disagree with many of my close friends on several issues we agree on others. Thats how humanas work... sad if we couldn't have disagreements. Infact people who agreed with me on everything would be very dull...
Im far more likely to hate someone who cuts in over others as an argumentative method than with someone I happen to disagree with. You can't spot those people except in person as its effectively impossible on the net.