Hi, I Am Getting A Lot Of Bad Mouth From

Hi, I am getting a lot of bad mouth from people closest to me for choosing Lactogen as my baby's milk. I don't think there are any problems, I'm not seeing any issues, and it's very affordable, his almost 5 months now. Is there anything wrong with this milk? Does it not have good ingredients like the rest of the formulas? He passes 1 stool a day, his weight is around 9.5kg, he was 3.4kg at birth. I breastfeed too but it does not keep him full so I bottle feed as well.