I wouldn't worry too much about the hate comments underneath Manziel's videos. The people who put that kind of time in to bash a talented person are the same sort who post hate-comments under ANY popular person's videos on Youtube.
Jealous losers, wanting attention.
Even totally innocuous videos of a cute baby or a puppy or an elementary school theater play will somehow devolve into hateful arguments that go off on unnecessary tangents, until the owner of the video starts deleting comments, or disabling comments altogether.
I'm of the opinion that "the masses" now, just as always, have been 99.99% worthless scum who, while they probably don't deserve to DIE, per se, probably a lot of them actually DO deserve a f*cking magnum bullet right to the lid.
In the past it was easier to dismiss their ramblings as the useless blather or useless people, but the Internet has, for better or worse, given volume to the voices of the 75IQ jackasses that populate a large portion of our planet.
Another quality observation, GM.
As you concluded, it doesn’t seem to matter what Youtube video or news article is open for public commentary, the temperament of the commentators invariably turns to a negative, ignorant, or mean-spirited timbre. Naturally, any video or article containing a subject matter that could be conceived as “racist” against non-whites, or “sexist” against women, or “hateful” against homosexuals is met with stereotypically-intolerant, Marxist antagonism, with a few intellectual outliers intermingled within the uncouth tidal wave of ethnically-insensate white pods. Aside from pro-white, pro-masculine, or anti-faggotory topics, music artists, entertainers, actors, athletes, and other celebrities seem to elicit the most vitriol.
From what I can tell, English-speaking whites seem to be primarily responsible for a vast majority of “online hate.” I believe this occurs because the topics in which their acrimony should be concentrating (Jews, Negroes, Marxists, Communists, Female/****** Supremacists, Globalists, Wall Street, Hollywood, Washington DC, the Welfare/Warfare/Police State, etc) has been so misdirected and debauched and manipulated that they begin “lashing out” in other imbecilic ways…and the manifestation of which can be observed polluting every corner of the internet and society in general.
In reading the comments below videos and news articles in the German language, I can say that the demeanor seems to be much less pessimistic and less likely to devolve into name-calling (and other inarticulate buffoonery), though of course I’ve seen countless exceptions.