Ad executives seem to love targeting young people. Young adults finally have their own income and have no idea how to be responsible with their money. They seem like the perfect prey.
The problem is that ad execs have no idea how to communicate with millennials. They could easily say, "Hey! Here's a cool thing you might like" but, no. They have chosen a way stranger and much more ineffective path.
They have chosen to instead say "Look at these emojis! You like emojis, right? So do we. See? We get it! Buy our stuff and be cool like us!" In their defense, we are at least talking about them and that's... something, I guess.