I find nothing wrong with that ad to be honest.. What I don't agree with is putting kids on a formula as toddlers.. A healthy diet, fresh air and exercise is better for their immunity
I also find nothing wrong with the ad.
In general I also agree that a healthy balanced diet, fresh air and exercise are the key important elements and that formula isn't nessecary for toddlers. However there are exceptions to the rule - My DS1 was one of these exceptions, where health issues actually forced us to introduce him to formula as a toddler: when he had been breastfed and then put on cows milk prior to this (he self weaned from the breast at 16months). It was actually a real struggle to get a toddler formula that would help with his issues, and which he would willingly drink (most of them being 'flavoured').