Youtube routinely scrubs views, likes, and dislikes from videos based on attempts to discern if they're fraudulent. You can't believe that this is evidence that Youtube is conspiring to support Biden unless you also believe that Youtube is conspiring to suppress BTS, the famous K-Pop boy band: https://www.quora.com/Why-did-YouTube-delete-views-from-BTS-...
Much like religious groups that use exposure to non-believers as ways to discourage defection, ridicule from outsiders helps keep them in the fold.