His proclivity for sesquipedalianism, manifested in the substitution of "infelicity" for the more pedestrian "misfortune," may have been an artifice to inveigle the reader into a divergent mode of cogitation.
They are unusual words, but not really obscure. I have always liked “inveigle”.
Probably just someone who likes to read older books. There have been a lot of so-called inkhorn terms in English; some made it into common use, some remained but are rare, some died on the vine.
1) This is awesome :)
and
2) How much of this is you, and how much is ChatGPT? (Or a thesaurus?)
Still, I tip my hat to you! :)