The definition of “Caregiver” is not limited to one specific interpretation of “care” such as meeting physical needs, which it seems you think is what I am saying.
ILE-SEI Infantile-Caregiver dynamic is definitely the most democratic of all - their needs are decided by them alone, unaffected by external perceptions of what their needs - emotional, mental, physical - “should” be. My dynamic is also Infantile-Caregiver, but this isn’t how it functions for my dyad. Base Si is more protective of resources, maybe even a bit selfish, which is a decent counterbalance to the tendency of base Ne to take advantage of care too freely given. Still, the ultimate goal of the Infantile/Caregiver pair is to adapt the world to harmonize with their personal experience of it. The Infantile broadens the horizons for it to happen (Ne ego), the Caregiver sets the tone of how it happens (Si ego).