Problem is people are brigading the channel, simply hitting dislike and moving on. The more of the video you let play, the more likely your vote won't be targeted by the algo.
Not defending, just offering advice to the YT gang.

So, you gotta let the video run in the background on mute, and then downvote it for the downvoat to stick. Got it!

Just y outube fortifying the vote.

They are just deluding themselves and their followers/sheep.