gender & parenting question for y'all

Q's soccer class happens to contain no girls, but the coaches have mentioned, when they line up for stickers, that if there *were* girls, they would go first, because "ladies first".

My knee-jerk reaction is "why you gotta bring gender into it"; as gender discrimination goes, I don't think it's *particularly* harmful, but still, ugh.

Do I say something? I think they're good coaches otherwise and it would be socially terrifying, but I could. Or Josh points out we could drop an email to the organization asking about the policy or something. Curious what people think.