Per my immigration attorney, the K-1 entirely bypasses 8 USC 1154 at the petition stage. 1154 governs immigrant visa petitions (I-130, I-140, I-360, etc.). The I-129F is technically a nonimmigrant petition even though it's understood by everyone as a pre-immigration vehicle.
K-1 AOS does not require a separate I-130. The approved I-129F plus the marriage to the petitioner supplies the petition basis. This is one of the cleaner cases where 8 USC 1154 is genuinely sidestepped, not merely deferred.
For K-1s, the path to residency is firstly via 8 USC 1186a, and is automatic and statutory, granting the conditional LPR.
Then at 2 years of marriage, 8 USC 1186a again handles the removal of conditions.
However, many attorneys will file I-130s, according to her, and such, simultaneously, though not required if you follow the process to the letter. And that does go via 1154.