It is true that Biden won the most votes cast for a U.S. presidential candidate, amassing about 81 million votes. Such a popular president should have some truly epic YouTube numbers. Let's keep track. I'm sure we won't see anything weird happening, such as dislikes being thrown out in the wee hours of the morning.
When you're dealing with "voting" on the internet (like Reddit, YouTube, or HN do), there's going to be vote manipulation. Some of it you might be able to catch early on. Some of it you'll end up fixing with batch jobs that identify "huh, there seems to be a few hundred users using this IP address and all watching this video and hating it at exactly the same time."
This blog linked here has such posts as "Something Rotten in Georgia" where she questions the accuracy of Georgia election results (https://phzoe.com/2021/01/06/something-rotten-in-georgia/) and "81 Million Ballots" where she says that "there is ample reasons to suspect that foul play bumped [the number of votes for Biden] by several million" (https://phzoe.com/2021/03/12/81-million-ballots/).
Are we really upvoting right-wing propaganda now?