No I don't tag Lockheart.
Perhaps look up seeding? I find it hard to understand how anyone can defend these companies and support processed feeds of any kind. They are life saving when there are problems, but like pp have said, I wouldn't favour processed solid foods over real foods either. DMs who, for whatever reason, cannot manage to feed their baby themselves, artificial milk substitute is a godsend, and they should be supported to be ok with that, without judgement.
I have pasted below some words from a researching paediatrician that give insights into seeding, if useful.
Breast milk is this amazing liquid that, through millions of years of evolution, has evolved to make babies healthy, particularly their immune systems,” said Dr. Grace Aldrovandi, the study’s senior author and a professor of pediatrics and chief of infectious diseases at UCLA Mattel Children’s Hospital. “Our research identifies a new mechanism that contributes to building stronger, healthier babies.”
We’re appreciating more and more how these bacterial communities, particularly in the intestine, help guard against the bad guys,” Aldrovandi said. “We know from animal model systems that if you get good bacteria in your gut early in life, you’re more likely to be healthy.”
Link to full article
importance of breastfeeding beneficial effects UCLA
There are loads of articles like this on seeding benefits... 30% microbiome from breast milk, 10% from areola/skin