Do you honestly think any voting (like/dislike etc) on the internet is used for its real purpose?I don't care if they dislike the video my issue is they are not giving feedback or using it for what it's REALLY for. People are still going to hate they are just gonna hit 1. I also asked I am now hearing different things from people on Youtube. Yes if affects your channel then I hear no it doesn't. I just want to see who is doing it. I think I know who is doing a mass dislike but I can't be sure.
Also, and i'm asking for honesty here, if someone dislikes your video and chose to hit the dislike button, are you expecting them to actually leave a comment to say why? I would fear that if YouTube added the mandatory comment for any dislikes that they would do the same for likes, which would further cause issues for channels.
I understand in your case getting 10 dislikes in quick time after upload is more like hate/bullying and therefore not using it for its real purpose, but whenever there is a like/dislike system it is always abused, YouTube is no different.
I am honestly curious as to why you suddenly get these dislikes the moment you upload. Sounds to me like there could be a bot involved. Dislikes can also come in waves from paid advertisements when you promote a video through YouTube, but you may not be doing that anyway.