Setting aside my own popcorn in this thread for a moment. Given the number of questions we see in the rules forum where it seems like FFG didn't think through the full implications of the text, it seems very likely this is a another case of that. I would wager it's probably correct that the FFG was only thinking about the aggressive behavior when they wrote the rule. And given the highly political nature of the issue, I think it's highly unlikely that we are going to see any kind of clarification about whether legally carried concealed weapons were meant to be covered or not. Which sadly is going to leave this in the hands of the people running the events and venues where they are held until something happens or there is a enough community outcry to get them to issue a clarification.
That said if they do issue a clarification I would wager it's likely going to be carrying a concealed weapon is a disqualifying offense at their events. While the issue may be split in the US as whole, in individual cities it tends to be one-sided (cities tend to have stronger anti-gun laws on average), and for their global consumer base it's probably also pretty one sided. So for those in favor of concealed carry, it would probably be wise to drop it. FFG has no incentive to come down on either side of a political issue unless forced too, but if they are, it's probably going to be whatever side favors their bottom line.