Maybe it's not ubiquitous, but it's certainly not a unique feature of Liberal, Kansas.
Are we sure people in Liberal aren't saying it ironically? Most people who pronounce Internet slang acronyms IRL are doing it ironically and the fad wears off quickly.
I've seen the initialism TFTI used in earnest, but I would consider the usage that the article refers to as uncommon at best.
Of course, all this means is that TFTI is an acronym, which are added to language all the time.
It's also a case of youth driving language changes. People in their 40s and older likely wouldn't use Internet-born acronyms as spoken words, but younger folks might (and frequently do in my experience).
I'll assume that you meant it sarcastically, though :) Kind of like when you don't get the invite and say TFTI.