Those paragraphs about how white and black people talk are generalizations and stereotypes and your analysis of them is clearly colored by your own biases, but you made it clear in the thread title that it was a racist observation (though I wouldn't go as far as to say it was racist, personally), so at least you're aware of it.
The excessive use of the word "like" is not always in the form of comparison. It's often used in the form called the "quotative like," which does more than just what it sounds like. To steal a line from various groups of social justice activists, go look it up, it's not my job to educate you. Make sure you also check out how AAVE has incorporated the quotative like, particularly how they've adapted it into uses that Mainstream American English (which is what linguists usually call the predominant dialect) does not use, specifically with the habitual aspect of the verb "be." It's not just white people using "like" in the manner you take issue with, and I haven't seen white people doing it noticeably more or less often than black people.
Overuse of "literally" is actually more often incorrect/slang usage of the word ("I'm literally dying") than some attempt to inject reality into things.
Black people don't have a monopoly on talking facts and making statements like "I'm not lying." Hell, there's even a redneck equivalent to that phrase: "I shit you not." It sounds like you're trying to say black people avoid figurative speech because they're somehow super grounded in truth and real talk, which is just silly. Black people also use overblown language, white people also talk facts.
"White people talk of falsities beneath actualities. Black people talk of truths beneath deceptions." 3/10, nice contrast and use of the language, but it doesn't actually mean much because it's based on nonsense premises as explained above.