[joe_the_user]

Well, the history of Hangul shows that the difficulty of phoneticizing a language is on the first problem in the disseminating a phonetic alphabet.

"Hangul faced opposition by the literary elite, such as Choe Manri and other Korean Confucian scholars in the 1440s, who believed hanja to be the only legitimate writing system, and perhaps saw Hangul as a threat to their status.[9] However, it entered popular culture as Sejong had intended, being used especially by women and writers of popular fiction.[15] It was effective enough at disseminating information among the uneducated that Yeonsangun, the paranoid tenth king, forbade the study or use of Hangul and banned Hangul documents in 1504,[16] and King Jungjong abolished the Ministry of Eonmun (언문청 諺文廳, governmental institution related to Hangul research) in 1506."

https://en.wikipedia.org/wiki/Hangul#History