Francis Ford Coppola on Thursday premiered his self-financed opus “Megalopolis” at the Cannes Film Festival, unveiling a wildly ambitious passion project the 85-year-old director has been pondering for decades. Peter Bradshaw for The Guardian called it “megabloated and megaboring.” Tim Grierson for Screen Daily called it a “disaster” “stymied by arbitrary plotting and numbing excess.” Kevin Maher for the Times …
