Biden comes across as more "in charge" than Bush 43, who let his cabinet run amok (to the detriment of the United States).
Yeah, sometimes he doesn't appear the best in front of a camera, but that doesn't mean anything in regards to how the government is or isn't functioning. Biden has had clear policy objectives and has mostly achieved them, even when facing staunch opposition. Whether you agree with him or not, you can't deny he has been a very effective President... meaning, he has been able to institute most of his platform objectives.