As for Venellope, although her and Ralph eventually supported each other in a mutual way, her story WAS one of a big strong man showing up and solving her problems, which she had the motivation to fix, but needed Ralph to make it happen. Outside of her will to learn how to drive, every else concerning her problems being solved was Ralph, who was pulled into her circumstances due to her selfish actions. The only way they could get away with such a plot, is that Venellope ultimately helped Ralph's acceptance of his role and performed the final heroic act to rescue him. For the last couple decades, the idea of a helpless princess needing a hero is unheard of as a concept and would result in the PC Police showing up and setting the writers on fire.
Because of this, there isn't an honest way to phrase what they were going for in this line in the trailer. They wanted to trot out the old concept of sexism in princess stories, but it hasn't been that way for decades. God forbid there ever be a movie made again where a princess is rescued by a hero and she doesn't either rescue him in turn because either A.) She's a secret badass B.) The hero is somewhat idiotic. So we've been given "do people assume all your problems all got solved because a big, strong man showed up?", which is a desperate "hail mary" play to pull from that dried up well.