As previously stated, Peter simply being in Infinity War and Endgame fighting aliens has nothing to do with what I'm talking about. I am referring to Peter's character arc in Homecoming - that is what was retconned, and it wasn't retconned by Peter simply being in Infinity War and Endgame (which there is nothing wrong with in-and-of-itself), but by how those films treat that character and the events from Homecoming.