The Incredible Hulk is one of Marvel’s strongest superheroes, but one power that shows off his true size and strength is just a little too extreme for the MCU to make it work. While casual comic book readers know the Hulk as a simple, strong hero with few powers, he actually has a fair amount of different abilities that all stem from his sheer strength (much like the Flash has dozens of techniques that are all derived from his connection to the Speed Force).
The Hulk has exhibited plenty of other powers besides his tremendous strength. His skin is impervious to many weapons; unless a projectile or blade is made out of an exotic material and/or not from this Earth, he won’t even suffer a scratch. His powerful legs allow the Hulk to jump for miles at a time (this is demonstrated in Ang Lee’s 2003 Hulk film, one of the few moments in which it did not deviate from the source material). Hulk can see ghosts, absorb radiation, and even 'infect' others with his rage, however one relatively simple power pushes the laws of physics too hard for fans to buy it on the big screen.
The “thunderclap” involves the Hulk spreading his arms wide before clapping his hands together in one swift movement. This allows him to blast air through buildings, extinguish fires, and even throw enemies off their feet and propel them backwards (this is also one of the only ways Hulk has access to long-range attacks in the comics). What began as a simple way for the Hulk to create noise with a clap (as seen in The Incredible Hulk #4) has evolved into a signature and devastating attack.
Unfortunately, the MCU is far more grounded in reality than the comics on which the films are based; while audiences may suspend their disbelief to allow the Hulk to exist, they will perhaps draw the line at a devastating clap. In general, the cinematic iterations of Marvel heroes are far weaker than their comics counterparts; in Avengers: Age of Ultron for example, the Hulk was defeated by Iron Man’s Hulkbuster armor, whereas the comics version has notably never lost a fight against Tony’s most powerful suit.
Currently, there are hints the thunderclap could appear in the upcoming She-Hulk show, but it's unclear how much power it will pack into a single clap. Hopefully, while the show might include some more reasonable effects like deafening enemies or dispelling oxygen to put out fires, it will avoid the most extreme comic excesses where Hulk is able to topple buildings and send kaiju flying. Ultimately, the MCU is a little more grounded than the comics, and that means that as cool as it is on the page, the movies should think twice before bringing Hulk's full-power thunderclap to the big screen.