The mythology of the Planet of the Apes franchise is built on time travel, but it seems unlikely that the more grounded modern-day reboot series will ever utilize that plot point. Although it’s a lot weirder than blockbuster sci-fi properties like Transformers and The Avengers, Planet of the Apes has endured as a popular franchise for over half a century. The series keeps evolving to keep up with the times. The original series captured the zany zeitgeist of the New Hollywood ‘70s, while the grittier reboot movies of the 2010s and 2020s are more in line with modern big-budget fare.

https://screenrant.com/planet-of-the-apes-new-movies-time-travel-kingdom-sequel-explainer/