This is political. Its to make sure when leftist propaganda which is clearly BS is posted, we cannot take solace in the amount of dislikes, and thereby know we still have some form of truth available to us online. This is a Winston Smith move. Nothing else.
Here is a test for Youtube’s new Winston.
If a video is counter-revolutionary, then it will show dislikes. But if it is pro-revolutionary, trans-kids or whatnot, it will hide dislikes.