Youtube is trying to promote a system that encourages you to "report negative content" and carries the perk of being able to "mass flag videos". Aside from evoking images of denouncing undesirables to the secret police, the system is self-evidently ripe for abuse and has led to dozens of response videos being made in opposition.
Linking to the original disasterpiece here: https://www.youtube.com/watch?v=Wh_1966vaIA
Note the like/dislike ratio on the video.
If Youtube dislikes something it's usually something positive, since the downvote armies are usually scum of the earth.
Even Rick Perry's Strong video?
A lot of the worst people on the right are pro-gay (Milo fans), so the dislike of his video is irrelevant.