Jackiefication would mean that the media is trying to make her appear to the public as another Jackie (Jacquelyn) Kennedy, the wife of John F. Kennedy. JFK and Jackie were very popular in the USA because they were a relatively young couple. Americans often refer to them, and JFK's tenure as president as "Camelot", a reference to King Arthur.
Same thing with Momifcation and Oprah-isation.
The writer made these words up. They're not official words in the English language.
The endings, or suffixes, "-isation" and "ification / fication" mean "to make something into". The writer could have also written "mom-isation" instead of "mom-ification", since these are not official words.