Late to the party here, and I can't be bothered reading through 16 pages of posts, but anybody who thinks that Joe Biden is the worst president ever has no appreciation of history. Without even mentioning #45, you'd have to take into account some of the true non-entities who served as president in the 19th century - people like Millard Fillmore, Franklin Pierce, James Buchanon and Andrew Johnson. In the 20th century you'd have to consider someone like Herbert Hoover, who was pretty much literally paralyzed when confronted by the Depression.
Biden's primary problem isn't that he's a "bad" president; it's that he's a "weak" president. He wasn't even an enthusiastic choice among Democrats to be their nominee. He was nominated with a kind of "sigh." He's having to deal with a country that seems hopelessly divided, with almost half of the country believing without a shred of credible evidence that he won the presidency fraudulently. He took office in the midst of a crisis; he has state governors who aren't doing much to help him out with that crisis. His party has very tenuous control of both houses of Congress, but both caucuses are divided between moderates and progressives so that Republicans still hold a lot of sway over what can be done.