If you spent more than 3 seconds reading what you post, you’d realize that fecal transplant only affects the gut microbiome, not body-wide resistance. Fecal transplant, obviously, does nothing to combat pneumonia, skin infections, abscesses, or literally anywhere other than the gut. As the vast majority of fatal or life threatening infections are not isolated to the gut, your argument fails. But I need not argue against citations, as the provided papers don’t even argue your point.

My medical degree, internship, residency, and years practicing as a doctor.

This is a simplified to the point of absurdity comment. Microbiome is important, but is absolutely not enough to prevent antibiotic resistance.