You are thinking way too much into this.
You are thinking far too little.
Look at the like to dislike ratio, currently 8,000+ dislikes and only 500 likes.
likes and dislikes only tell you whether people liked it or not, not what the intention of the maker was.
Go through and read the comment section. Even Democrats are down voting and stating their displeasure in the comments. They are completely serious.
Comments only tell you what the commenter thought, not what the video maker thought.
Try to watch any late night "talk show", or "comedy show" like Saturday Night Live, or "news channels" like CNN. The fanatic "Liberals" have been building up to this point. It continues to backfire spectacularly, thus this thread, but yes this is completely serious.
Completely irrelevant - and a little incoherent.
A few seconds - at least a few seconds longer than you seem to have. You seem to not be able to get over what you see in it, so you haven't even started to consider what the maker thought he was doing.
If this was a joke, why are we laughing at them and not those they are demonizing?
Because you don't "get it" the way it was intended - or you just don't find it funny that way. Still says nothing about what the maker intended.
The only way to claim this is indeed a joke, is to agree that Liberalism is a mental disorder. This far left SJW type liberalism is the reason Trump was elected, and the reason SNL, CNN and other far left outfits are at historic low viewership.
You're completely off the rails on this now. I mean, look at that bizarre false dichotomy you just made. "The only way to claim this is indeed a joke, is to agree that Liberalism is a mental disorder." Which is logically the same as saying, either it's a joke and liberals are insane or it's not a joke and liberals are sane. It's got you so worked up, not only can you not see this from another perspective, you can't even that it has deranged you too much to see how deranged you are.
I've written material like this in the past. The martini chug is a tell, the over-the-topness is a tell, the language, the juxtapositions, the deadpan are all tells. The punchline - basically don't let your kids grow up to be Republicans; this is a joke, but not one that is funny to you.
Turn this around and make it about "mother's don't let your kids grow up to be Liberal". It would be full of exaggerations and tropes and all the liberals would object to the stereotypes and you'd just call them a bunch of snowflakes because they'd be melting down just like you are now. Sure, there's some derision behind it, a little bit of a barb, but it's played for yucks for the Democrat supporters who like to see the GOP paddled a bit. Yes, it is humour. Doesn't mean it's funny to you, but it is built quit deliberately like humour.