Hayao Miyazaki was the co-founder of Studio Ghibli and one of the most beloved anime directors of all time. That being said, a number of people he's worked with over the years have come forward to confess that he was difficult to deal with and work with, including Miyazaki's son, Goro Miyazaki. Miyazaki is a fantastic artist, but he is also a very strong critic. Modern animators using CGI technology have met with Miyazaki's scorn, while the Academy at the 2003 Oscars were left cold when Miyazaki refused to attend the ceremony.
Source:https://www.cbr.com/ponyo-miyazaki-apology-to-son/