A FlyerTalk Posting Legend
Join Date: Sep 2012
Location: SFO
Programs: AC SE MM, BA Gold, SQ Silver, Bonvoy Tit LTG, Hyatt Glob, HH Diamond
Posts: 44,353
To be fair, the majority of the time I'm trying to line up for zone 1 boarding, 80% of the people between me and the podium are not zone 1.
Unless there's a separate line, it's actually a very reasonable assumption that people ahead of you are not zone 1.
That doesn't make the behavior acceptable, just the assumptions.