Waste of money. Anyone can eat baby food, but I would have to ask 'why? '. Baby food overall is wholesome, but bland, as most do not have seasonings. They are also pureed to allow a toothless baby to consume them. Assuming you can chew food, you are going to pay a lot more on a per ounce basis for baby food vs. Table food.
Does Not Matter. Totally safe. No real extra benefit. I do not know of a reson to worry about it.