President Joe Biden delivered the State of the Union Address Thursday amid claims by Republicans that he was too old, had dementia, and couldn’t handle the burden of the job. The mistake the Republicans made, said MSNBC’s John Heilemann, is that they set the bar so low that anyone could clear it. Instead, Biden crushed it to such a degree that Republicans now claim he’s “too angry” or even that he’s on drugs to give him energy. Political insiders and Beltway media “had one thing they were looking at last night,” he explained. “None of the rest of this mattered. It had become a speech about whe…