IMHO the vast majority of 'arcane in English' words 'that dude' uses are of latin origin, although some of them came to English from various indo-European tongues. How is it that using language properly is somehow inhibiting civil discourse? He's short on memes, to be sure but memes "meme \MEEM\ noun. 1 : an idea, behavior, style, or usage that spreads from person to person within a culture"
By definition those are unintelligible to the uninitiated and often misleading to those who think they understand.
As for "...stupid people are enticed by complex things" is not that inherently illogical?
Your last line also reflects a certain lack of context. Flemish is an amalgamation of dialects with lexicographical differences that are sometimes vast (look it up). English is quite the same. A native English speaker from, say, West Virginia mountains will probably not understand anything at all with a native English speaker from, say, Chennai while neither one will understand much from a typical native English speaking Cockney.
The point is simple. Dumbing down language and using memes and other colloquial forms is intended linguistically to enhance us-vs-them.
I hope, perhaps vainly, that we all try to communicate with each other here using standard English language words that facilitate use of standard translation tools and dictionaries.
We are all from quite different backgrounds linguistically.
The topic of your ire is a person who uses words that are contained in dictionaries and can easily be understood by nearly anyone with a simple search. No so with many of the colloquial forms, many of which mean entirely different things depending on cultural context. In this forum cultural context is not commonly held.
If I emphasize this excessively it is perhaps because much of the posts here are unintelligible to me and are not easily deciphered with a simple search. Mostly I think my English may be adequate, albeit with typo -laden posts.
So if Audie should 'cool it' with correct word usage how about other people 'cool it' with memes typically used by people with possibly limited vocabularies in the English language.