system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: There is no good reason why Biden would win the presidency and immediately resign to allow Kamala Harris to become president and the idea that he is planning to do so is a ridiculous conspiracy theory

As the title states, there's a theory going around among the Trump camp that Biden is planning to win the presidency and immediately step down in order to make Harris the new President and effectively "trojan horse" her into the presidency, subverting the will of the people in the process. I am not here to argue about whether Biden is actually planning to do this, as there isn't currently any substantive evidence that this is the case.

My question is this: Why? Why would Biden willingly step down as president to put another person in that office instead of doing what every other president did and just being president like he ostensibly planned? What is gained by Biden handing over the office to Harris instead of just staying president and pushing the same policies? I'm interested in seeing what the arguments are here and whether or not they hold water under scrutiny, because to me this seems like a ridiculous conspiracy theory from a camp that is desperately looking for reasons why not having another Trump presidency would be a bad thing.

Edit: A quick clarification to my argument: I'm not addressing the idea that, if Biden were to leave the presidency for any reason, Harris would become president and Pelosi would become vice president. I understand that that is a worst case scenario for conservatives, but I don't see how that is substantively different from a Biden/Harris presidency and thus why Biden would willingly step down as president in order to manufacture it. If you want to argue this point, please explain how a Harris/Pelosi presidency would be substantively different than a Biden/Harris presidency.
gpt
> Harris would become president and Pelosi would become vice president. 

Actually, the new president (Harris) would appoint someone as VP, who would need to be confirmed by Congress. Pelosi wouldn't become VP, even though she'd be next in line for president after Harris.