As part of Dan Loeb’s mid-August return activist campaign at Disney, he proposed to Bob Chapek, the company’s C.E.O., the names of two people whom Loeb would like to see Disney add to its board as part of a general “refresh,” as he diplomatically put it. Loeb, of course, is the billionaire hedge fund manager whose Third Point LLC has some $14 billion under management. He first forayed into Disney stock at the beginning of the pandemic, eventually making a killing, and then sold out of the position earlier this year. Now he’s back, with an investment of around $750 million and a thoughtful list of demands. Loeb’s stake may be less than 1 percent of Disney’s $200 billion market cap, but he knows how to get attention and he knows how to be a nuisance until he gets what he wants: either a tasty profit or the change he is seeking, or both.