Musk's endorsement of Peltz for Disney's board, despite past criticisms, suggests a potential positive impact on Disney's share price in the short term. Musk's influence and Peltz's potential board membership could be seen as positive by investors, especially given Musk's track record with companies he's involved in. However, the recent victory of Disney's board over Trian and Blackwells' nominees indicates that any immediate changes or impacts might be limited.