as the post itself points out this has nothing to do with dissident voices but with preventing dislike attacks and 'ratio-ing' as is common on websites that have these mechanisms in place. Downvote bombing content if anything distorts discourse and makes it harder to figure out what people actually think. There's a reason this very website caps downvotes at -4.

What I find cringeworthy is this keyboard warrior mentality of likening an incentive change on YouTube videos to dissident activity, as if downvoting some cat video on the internet is like publishing Samizdat in the underground of the Soviet Union, maybe pipe down a little bit