If ever I joined U-Tube, (which I very much doubt!), to broadcast my music which I play on my various musical instruments each day, the first thing I would do is disable all replies to my post, to stop all the disparaging remarks which originate from all the low-life which mostly inhabit U-Tube...(similar to many various Forums)....Beware. It could seriously depress you!
Paul......
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Paul:it only happens with big videos on big channels,,but small vids do tend to get disliked unrightely.
A girl in my class for example:amazing singer but 2 likes and 3 dislikes. :-/
I might look up a video.
As a Musician, I do spend some time watching/listening to, U-Tube Classical, etc, music, broadcast by talented musicians, and I despair at some/many of the replies made by a selection of the various low-life creatures which inhabit our Planet!
I mostly avoid certain...

Paul.... 8-)...!