I know many parents that want simple food with no preservatives or additives. A baby food jar that just says “pureed carrots” meets the bill. One with “pureed carrots, salt,” invites the question - is that too much salt? Babies have immature kidneys and (I am told) can’t process excess salt as easily as adults. A baby food jar that said, “pureed carrots, natural flavors, salt,” would get put right back down.
Some kids have digestive issues, and one thought is always, “it could be an allergy.” If so, the advice is to introduce kids to only one new ingredient at a time and see how they react. So, once again, “strained peas,” good; “strained peas, pureed carrots, paprika, onion powder,” worthless.
There are also some baby guides that say don’t introduce kids to overly spicy foods too early because then they won’t like bland foods when they grow up. I wonder why liking spicy foods is a problem (it doesn’t seem to be a problem for roughly a billion Indians) but harried parents not giving too much thought to this are just likely to go with that advice. Bland food it is.