Ohmychrist my seven week old baby was ten weeks early. She was on neonatal where she was tube fed ebm in the early days. Some I expressed for her, and some was donated (so from your magical milk bank). She was only eligible for donated ebm until she was 32weeks gestational age. So your wrong about there being milk accessible from donated sources for all.
Dd is now on formula. A prescription formula that the hospital feel is the best nutrition for her. I was getting less and less expressed milk and becoming stressed and depressed by "failing" my tiny daughter. Attitudes such as yours can cause so much damage, I am normally a rational, sensible person, but found myself becoming increasingly irrational and sensitive over the tiniest detail of dds feeds.
All my other children have been formula fed. ( I have 5). The first child I was determined to breastfeed and couldn't. It was actually my midwife who sat me down and told me that my baby would thrive on formula and I should not feel guilty.
None of my children have any health problems, none of them are overweight, none of them are fussy eaters and all of them are highly active and healthy. They are all intelligent, dc1 top of her grammar school class.
Guilt tripping mothers into bf, and villainizing women who ff is counter productive. It leads to PND, poorly babies who aren't thriving because mothers are obsessing over not giving "poisonous" formula, infections for mothers such as mastitis. In my opinion, the implied pros of bf are not worth the cons.
And as pp have said, my children rarely get colds, or tummy bugs, unlike most of their bf peers. Coincidence? Possibly, but I don't trust statistics.