Black Widow's controversial arc in Avengers: Age of Ultron is made so much worse by Thor's personal storyline in the Multiverse Saga. On the heels of The Avengers' success, Marvel Studios planned the next re-assembly of the original Earth's Mightiest Heroes. Just three years after the 2012 blockbuster, its direct sequel was released. While another box office hit for the Marvel Cinematic Universe, Avengers: Age of Ultron wasn't universally loved like its predecessor. Aside from production woes, there were also certain story elements in the film that were divisive.
https://screenrant.com/thor-love-thunder-arc-black-widow-parents/