Barbenheimer has been a fun internet sensation and all, but it actually reveals a sad truth regarding the state of cinema...

What is Barbenheimer?

Barbenheimer is an Internet phenomenon that began circulating ahead of the simultaneous theatrical release of two films diametrically opposed in genre, Barbie and Oppenheimer, on July 21

More about the movies:

Oppenheimer:
Oppenheimer is a 2023 epic biographical thriller film written and directed by Christopher Nolan. It is based on the 2005 biography American Prometheus by Kai Bird and Martin J. Sherwin about J. Robert Oppenheimer, a theoretical physicist who was pivotal in developing the first nuclear weapons as part of the Manhattan Project and thereby ushering in the Atomic Age. The film stars Cillian Murphy as the title character, his sixth performance in a Nolan film and his first in the lead role. Emily Blunt portrays Oppenheimer's wife, Katherine "Kitty" Oppenheimer, with Matt Damon portraying General Leslie Groves, Oppenheimer's military handler, and Robert Downey Jr. as Lewis Strauss, a senior member of the US Atomic Energy Commission. Blunt, Damon and Downey Jr. took significant cuts to their pay rates to work on the film. Other members of the supporting cast include Florence Pugh, Josh Hartnett, Casey Affleck, Rami Malek, and Kenneth Branagh.

Barbie:
Barbie is a 2023 American fantasy comedy film directed by Greta Gerwig from a screenplay she wrote with Noah Baumbach. Based on the Barbie fashion dolls by Mattel, it is the first live-action Barbie film after numerous computer-animated direct-to-video and streaming television films. The film stars Margot Robbie as Barbie and Ryan Gosling as Ken, who go on a journey of self-discovery after their expulsion from the utopia Barbieland, alongside a large ensemble cast that includes America Ferrera, Simu Liu, Kate McKinnon, Issa Rae, Rhea Perlman, and Will Ferrell. A live-action Barbie film was first announced in September 2009 by Universal Pictures with Laurence Mark producing, but development began in April 2014, when Sony Pictures acquired the film rights to the character. Following multiple writer and director changes and the casting of Amy Schumer and later Anne Hathaway in the titular role, Sony lost the rights, which were transferred to Warner Bros. Pictures in October 2018, with Robbie being cast in 2019. Gerwig was announced as director and co-writer with Baumbach in 2021. Gosling and the rest of the cast were announced in early 2022. Filming took place primarily at Warner Bros. Studios, Leavesden in England and on the Venice Beach Skatepark in Los Angeles, California from March to July 2022.

Mission Impossible Dead Reckoning Part One:
Mission: Impossible – Dead Reckoning Part One is a 2023 American spy action film directed by Christopher McQuarrie from a screenplay he co-wrote with Erik Jendresen.[5] It is the sequel to Mission: Impossible – Fallout (2018) and the seventh installment in the Mission: Impossible film series. Dead Reckoning Part One sees Tom Cruise return as Ethan Hunt, whose IMF team matches wits with a powerful rogue AI known as "the Entity". The ensemble cast also features Hayley Atwell, Ving Rhames, Simon Pegg, Rebecca Ferguson, Vanessa Kirby, Esai Morales, Pom Klementieff, Mariela Garriga, and Henry Czerny.


What Barbenheimer Actually Means For Cinema (The Sad Truth)

Stock footage provided by Freepik, downloaded from videvo.net
Huge thanks to these articles for the information:
There’s Something Sad About Barbenheimer (TIME)
The Complete Guide to Everything Barbenheimer (The RINGER)