I think there's also a big variety in what people mean when they say "start
solids".

To many people, it means just a smidgen of a taste of whatever mom and dad
are eating here and there.  Offering some foods during meal times just to
play and explore with, and perhaps eat if the kid feels like it.

Others feel it means starting three meals of 2-3 jars of commercial baby
food with some lovely cereal mixed in a day.

Some parents who are doing the former, are scared or concerned they should
be doing the latter, and consider that the problem.

-wendey (Studying LC in Montreal)