President Joe Biden took to X to assert his accomplishments in office, despite concerns about his age and fitness for the role. What Happened: On Monday, Biden said in a post, “I’ve been doing this a long time, I know I’m not a young guy. But I’ve gotten more done than any president has in a long, long time. I’m willing to be judged on that.” Biden shared a video excerpt of an NBC interview with NBC anchor Lester Holt in the post. The post on the Elon Musk-owned social media platform comes amidst growing concerns about his age and fitness to serve as president. Recent polls have shown a declin…