Yeah as @jacobtothe mentioined, the creators can see the dislikes. There may even be extensions that attempt to do the same for viewers (not sure if still operational). But you still can't see "who" disliked it, don't even think you can see who liked them either.
Yup there are extensions and apps that allows anyone to see the number of downvotes on a youtube video but not who did them.
And Youtube can randomly decide to remove views/followers (maybe likes too) on suspicion of bot activity. Who know if they were actually bots. These web2 giants have too much to push whatever agenda they like.