I think they're doing it because all of the major Marvel characters are done. Iron Man, Captain America, Black Panther etc. are gone so the next phase has to be "fan service" to keep making bank. I liked the Spiderman movie for what it was. But in the end, the script seemed like it was written with "hey, how do we get all the Spiderman actors into the same movie!" The plot was dumb, if we're being honest.