View count vs like/dislike ratio is an incredible accurate metric for my point.

Can you please elaborate? You have a way to compare a raw metric (counts) against a ratio (like vs. dislike) that yields useful insights as to whether the like vs. dislike ratio was the product of brigading?

This makes me think of how steam does indeed have some smarts to warn users when a game may be getting review brigaded. I think it's a combination of volume of reviews by time, and perhaps the referrer (?). It does seem to work fairly well afaict.

Steam also allows a user to view the raw information if they want. At least the last time I looked. The option could definitely be more obvious though. Giving the user the ability to see the like/dislike data over time gives them their own ability to decide whether likes/dislikes come from an external source to the page. This information should include a graph of the total views over time as well as likes and dislikes over time in parallel.

Not giving users this information and removing like dislike counts just makes it so that a small number of people at YouTube have even more ability to control what is pushed on that site. With this change users have even less ability to check the validity of a video; validity means different things to different users here. People who stay at YouTube will just have to deal with the fact that they will have videos pushed to their screen for reasons that are hidden to them, that they don't have the ability to check out anything other people think about the video, and can't even signal that there is something wrong to them about the video (sure, they could comment, but any comment can be deleted by the video author and there is the fear of losing your Google account, which can include their email contact to everyone and authentication information also, which can have huge consequences for their ordinary life).

It's not the worst idea but it also triggers when developers do something to the game and many players want to review that change.