Q: Are you saying that anybody who uses the SFCP is a hack?
A: Not at all. It's a tool like any other. Chord progressions get reused all the time. There's the 12-bar blues, the I-vi-IV-V favored by 1950s rock and roll (and -- seriously -- half of the score of the stage version of Grease) and the I-V-vi-IV covered by Rob Paravonian in his famous Pachelbel Rant, among others. I could fill volumes with I-V-♭VII-IV, seriously.