It clearly depends on video versus who is watching. EEVblog channel most likely have broad audience - from beginners to hardcore professionals. Some advanced video may get "dislikes" from beginners, some snobs may rate production quality instead of contents and so on...
Yes, many reasons. I know a couple of viewers who said they dislike every time I include a "clickbait" thumbnail, which means any thumbnail with text on it ![Roll Eyes ::)](https://www.eevblog.com/forum/Smileys/default/rolleyes.gif.pagespeed.ce.XcUK202Yqt.gif)
Dave, we have already spoke about this. As I said, I get it..only this feature is new, and need to give it time to see how effective it is...but giving a "dislike" just make no sense.
It's also spring break in the states...so total numbers may reflect the ratio. for me what I sell, have been slow, even services..this is typical..It usually jumps after April15th..Don't know if or how it affects YouTube views.
Also for me I tend to batch watch YouTube channels i follow, Right now I'm way behind..again, don't know how that affects numbers..
Maybe just give it more time..