The only surprise about this new report is that packaged baby food has half the nutrition of home-made. That's pretty appalling. I mean, if it was just as calorie-dense but with lower vitamins, I wouldn't have been surprised, but they say that babies need to eat twice as much from a jar as from home-made to get the same protein and energy.
Or, to put it another way, you need to buy two jars/pouches for the equivalent nutrition of a few tablespoons of home-made.
They show that ounce for ounce, packaged baby food has only the same nutrition levels as breastmilk (formula is 6kcal/100ml denser IIRC) but you'd never give a 6mo nearly half a pint of baby food, as that would be three or four jars!