I've been on the internet for 6+ hours a day for the past 15 years and I have literally never seen it.
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.