I want every guy who has a problem with the OP's request to put themselves in the situation described in the quote above. If you would have a problem being referred to as 'ladies', then you're a hypocrite if you continue to refer to everyone as 'boys'. People shouldn't ask others to tolerate something they very well wouldn't tolerate themselves.
U rite
Growing up in a household of mostly women and also going places with a group of women as the only dude it bothers me a bit when that happens. I know most of the time the person who does it doesn't mean for it to be offensive or didn't put any thought into it. But I do legit feel a way when it happens. So yeah that makes a lot of sense and I feel a bit stupid for not thinking of it that way.