What happened?
Spider-Man: Homecoming 2 Will Bring Back Michael Keaton's Vulture
https://screenrant.com/spider-man-homecoming-2-michael-keaton-vulture/
Looks Like Michael Keaton’s Vulture Will Return For Spider-Man: Homecoming 2 After All
https://wegotthiscovered.com/movies/michael-keatons-vulture-will-return-for-spider-man-homecoming-2/
Hmmm...
Back in May, it was revealed that Michael Keaton's Vulture and Michael Mando's Scorpion would not appear as villians in Far From Home despite being in the post-credits scene in Homecoming. "We never really found the right moment to do something like that. It's always just about it being right for the story and not just some sort of shoehorned-in cameo," director Watts said.
https://www.digitalspy.com/movies/a28209307/spider-man-far-from-home-vulture-scorpion-absence/