Those Are My Prints!
It’s nice that the filmmakers decided to incorporate our universe in the MCU. It makes us feel like we’re a part of the fictional universe, even for just a brief second. For instance, Jeff Bridges, the star of The Big Lebowski, also played Obadiah Stane in Iron Man, but Tony calls Thor “Lebowski” after he gained a ton of weight in Endgame.
In Iron Man 3, there’s another scene where the filmmakers combined the real-world universe with the MCU. This scene takes place when a would-be supervillain is hanging outside of Grauman’s Chinese Theater in LA, which also happens to be where RDJ left his hand and shoe prints back in 2003.