What is the significance of the five year jump in the mcu?

The single source supplied is a Wikipedia entry describing various features of the Marvel Cinematic Universe, such as locations, weapons, and artifacts. It notes that many elements are adapted from Marvel Comics while others were created specifically for the MCU, but it does not mention any time‑skipping narrative device. Because the source contains no information on a five‑year jump, no specific significance for that event can be stated here. For details on MCU time jumps, additional sources would be required.