We'll just have to agree to disagree because there's no way to quantify this, and on top of that, it wouldn't happen in the first place. But to be fair, you're acknowledging that phones aren't an issue in Orlando, while me and Stryker are confirming that, while perhaps not an issue in the literal sense, it's at the very least an annoying inconvenience in LA, despite both events seemingly having the same policy. That alone should give you at least a little bit of a clue that people in Hollywood really, really want to have phones out in the mazes, and if there was something in place that straight up prevented them from doing so, there would most definitely be an issue.
Whether that's an attendance thing or an optics thing where people complain like crazy and it makes HHN look bad, I have no clue and it ultimately doesn't matter, I just know a lot of people—seriously, a lot of people—wouldn't stand for it. To say "no one would care" is completely insane.