Billboard demonstrating gender stereotypes as most people automatically assume that Alex is the boy.
I agree with the point the billboard is making entirely. However, there are many more variables that make you assume Alex is the boy, for example:
The boy is looking directly towards you, while the girl has her eyes closed.
The boy is also center frame, giving the illusion that the billboard is about him.
The name Alex is directly next to the boy.
The boy has his hat backwards, revealing his face, making it the center of attention, while the girl has her hat forward and it shades her face - diverting the attention away from her.
My point is, that if the girl was center shot, posing in the same manner as the boy, with the boy alternatively on the right. People would assume Alex is the girl, as she is the center of attention in the billboard.
I agree with what the billboard is representing, but know that there is many more variables that affect our perception of who Alex is.
Edit: I also failed to mention that the writing in the bottom right hand corner is hardly visible, and the boy is lit up better than the girl.