I'm still bf my two year old. I am not obsessive, it also isn't any of your business.
Maybe look into your own personal reasons for why you're so interested and judgemental.
I personally have noticed a trend of people telling breastfeeding mothers to stop, in direct contravention to the WHO guidelines which suggest are two and beyond.
I've never judged anyone for formula feeding - although I when I was about 15 I read the back of an SMA tin as I was passing it to my uncles wife and thought the ingredients were weird as fuck. I was quickly told to be quiet in case she heard me and I've never asked anyone since why they feed their newborn baby rapeseed and sunflower oil.
Whey protein (milk), vegetable oils (sunflower, rapeseed), lactose (milk), skimmed milk, long chain polyunsaturated fatty acids (DHA (fish oil), AA (Mortierella alpina oil)), 2'-Fucosyllactose (2'FL), calcium citrate, potassium citrate, magnesium chloride, potassium hydroxide, emulsifier (soya lecithin), potassium chloride, choline bitartrate, acidity regulator (citric acid), L-phenylalanine sodium phosphate, sodium chloride, vitamin C, calcium hydroxide, taurine, L-histidine, inositol, nucleotides (cytidine-, disodium uridine-, adenosine-, disodium guanosine-5’- monophosphate), antioxidants (tocopherol-rich extract, ascorbyl palmitate), ferrous sulphate, zinc sulphate, vitamin E, L-carnitineacin, pantothenic acid, copper sulphate, thiamin, vitamin A, riboflavin, vitamin B6, manganese sulphate, potassium iodide, folic acid, sodium selenate, vitamin K, vitamin D, biotin, vitamin B12.