The Bolded is inaccurate in your post. Then Phil sure actually contradicted himself or the article you posted was misinterpreted, because Schiller also quoted that the iPhone SE stands for “Special Edition”, which he directly admitted in an interview on the phone launch three years back on March 23, 2016.
https://gizmodo.com/the-se-in-iphone-se-stands-for-special-edition-says-ph-1766329185/amp
My quote is correct, so if Phil Schiller said something else at another time, than yes he technically contradicted himself. However, the bottom line seems to be that whether or not the letters have meaning really doesn’t matter. What matters is the value and connotation people attach to these letters. As Schiller goes on in the interview, it is the same in the car sector, where letters may stand for a specific word, but really just stand for a feeling or attitude.