Maybe he said he was going to, or confessed to raping a little girl. That would justify this. That's probably not what happened, but his point is that we simply don't have the context (unless you know where this video is from, because I don't).
If by healthier, you mean skinnier, it was also the cigarettes. Vices are bad, but most people have them. Take all of them away, excess food becomes the vice. (Because it can't be made illegal, because we need at least some of it)
The increase in autism diagnoses is actually because the bar bar for an autism diagnosis has been lowered significantly. People who previously would have just been "socially awkward" now get a diagnosis of autism, whereas previously, it would have had to actually significantly affect your ability to function in society in order to relieve a diagnosis.
I'm not sure how you think that's a rebuff to the meme. Nothing was mentioned in the meme about the economic systems used.
The novel didn't even particularly go into it. I mean there were rations and quotas, which suggests communism, but it's not really clear.
1984 talked far more heavily about controlling people through language and redefining terms. So yes it's about totalitarianism.
I'm not sure the author of this meme knew what point they were trying to make. It is somewhat hinted at.
In the realm of changing language, Gender terms have (and are) being redefined and revised.
In terms of double think, in one breath saying blacks are intelligent and capable then turning around and saying they incapble of getting I.D.s to vote (due to either being to lazy or unable to understand the process, i.e. stupid?)