I just realized and now believe that the four Supreme Efforts (Cattārō Sammāppadhāna) is literally anapanasati.
I believe the four supreme efforts can be used to as supporting evidence that anapanasati is not breathing meditation. If we take the four supreme efforts literally as anapanasati, how could someone that’s focusing on breathing in out be practicing the four supreme efforts? Such as taking in kusala and discarding akusala?