After insisting as recently as 2022 that “for Twitter to deserve public trust, it must  be politically neutral,” Billionaire Elon Musk has changed course and is now leaning hard on his new conservative identity as a booster of President Trump, spending all hours of the day demanding voters support the former president this November. His social media platform X — facing revenue losses and a sharp decline in overall value — is arguably now the greatest megaphone the former president has, thanks in part to Mr. Musk.