In the ever-changing world of teen popularity, actor Zac Efron just might be the king of the hill for the time being. His recent happening with Simone Biles, who is herself a hot commodity right now with the Olympics in full swing, further reinforces the height of his presence on the celebrity scene.
No, Zac Efron has not become the most popular celebrity with teens. Other celebs such as Justin Bieber, Tyler Posey, Codey Simpson and Jaden Smith are most likely more popular with the teens than Zac Efron is. Teens seem to stick by their favorite celebs through all sorts of odd behaviors and such.
Stars like Taylor Swift, Justin Bieber, and Miley Cyrus still dominate the teen audience. Although Zac Efron is extremely popular with teens, Bieber or Swift is most likely the most popular. These two performers are the highest earners and seldom a day goes by without one of them being in the headlines.
Yes, Zac Efron is wildly popular with teens (see Simone Biles and the rest of the USWNT) but celebrity changes, and you could argue that Taylor Swift or Justin Bieber or a Hemsworth could also be given the same label. Zac Efron is very popular right now, but I'd expect that to change over time.