Jamie Dimon, who has led America’s largest bank, JPMorgan, for 20 years and through multiple recessions, blasted remote work and offered a stern warning for any younger generations who want to move up the career ladder: Get into the office. “If you go to a meeting with me, you got my full friggin’ attention the whole time,” he said earlier this year at the Hill and Valley Forum, which brought together leaders from Washington and Silicon Valley.…