You misunderstood. Osama presumed the likelihood that Biden would succeed Obama as President. Had Biden not declined to run in 2016, he might have been right. Osama also presumed he would still be alive to “enjoy” a Biden Presidency.
Because according to them (OBL) the whole U.S government is incompetent and the concept of military industrialization is so engraved in American politics it can’t be stopped.
which is why OBL master plan was not to combat the U.S military / government with force, but to target the pocketbook of Congress to make them spend endless amount of money on a war that will never end.
and surprise it has worked wonderfully closing in on 10 Trillion, and ever expanding endless wars across Africa, Middle East, Asia,
AQ simply pray on existing religious tension in Middle east, Africa, Asia that has existed for thousands years.