I've gotta say, forcibly being Switzerland on the subject) that I don't understand the judgements made against other parents for their feeding choices.
My background: my twins were born prematurely. My son had a LOT of problems, including an intolerance for anything but breastmilk. My daughter was a hungry little fiend. Between the two of them, there wasn't enough breastmilk to go around always. So daughter got formula on many occasions. (usually 50% of the time, sometimes more)
They both turned out fine! My son actually gets sick more often than his formula fed sister! But that's a lung issue.
Everyone, I hope, is going with what they think is *best* for their kids.
And we always teach children not to judge others, but I've discovered that moms tend to be very judgmental (and some dads, too) of other peoples parenting. I've been judged for the way my wife and I raise our kids! And I may have had a moment or two of judgement on others, but I try to avoid that.
In this day and age, parents should be focused on making sure their own kids are happy and healthy......and not on the path to becoming a raging gunman or psychopath.
As long as the kids are healthy, clothed, and loved....sure you can question their parenting, let it be!
Once you've raised a perfect angel, who has never done a thing wrong in their whole existence, and saves puppies, and kittens, and babies for a living, then maybe you'll be qualified to judge me on bottle feeding my kid, with whichever substance happens to be in the bottle.