There's some pushback from the neighbors because finishing it all means bulldozing hundreds of apartments, although those apartments were bought at a discounted price decades ago because everyone knew they had an expiration date. And now that it's here, they want to keep their apartments even though they were told about the Sagrada Família from the start.
PS: Gaudí's name is Antoni, in Catalan. Not Antonio. He was a proud Catalan, he was arrested for talking in Catalan.