Appreciate that excess production of 2000L of breast milk would require the amount of excess caloric intake of 2 years worth of normal adult consumption. With grocery prices being what they are, that's something.
Pumping and breastfeeding aren't easy. You don't get to determine when it's time to pump. Hanging out with friends? Better have a pumping plan. 3 AM? Time to pump. The fact that she's giving up so much time and freedom for others is really amazing.
There are benefits though too. It makes maintaining or losing weight easier since your body is dumping so many calories in to the milk. There's a also a whole category of porn around lactation, I wouldn't be surprised to find out she's also got an onlyfans.
I had two premature babies in the NICU (twins with last minute maternal complications, everyone is fine but things were early), and they benefited so much from donor milk.
Newborns in general and preemies in particular have basically no immune system. NICU preemies are also susceptible to a very serious intestinal condition that can cause parts of their intestines to die.
Breast milk is filled with antibodies and various immune response related proteins that help bootstrap their immune system and might essentially prevent the intestinal issue entirely.
Once you're developmentally advanced enough there's no real long term difference between formula and breast milk, but before then the immune compounds we can't make synthetically are basically medicine.
It's a little odd because breast milk seems more intimate than something like blood, but it's arguably more impactful.
A statement from the executive director of Mothers’ Milk Bank of North Texas, Shaina Stanks, said her institution was left “astounded and inspired” by how Ogletree had delivered “an incomprehensible amount of surplus breastmilk to fragile infants”.
“Her life-saving efforts are an undeniable testament to her extraordinary generosity and compassion,” Stanks’ statement added.