They have a responsibility to provide reliable information that everyone can count on. That means the elderly, the very young and the infirmed along with everyone else. They are not telling you what you MUST do. They're telling you what you need to know to make informed decisions.
0.29% of chicken owners get salmonella? Well count me in the 0.29%. I had stomach aches and persistent diarrhea for the first 2 weeks I had chickens. I wasn't surprised. I read all about good hygiene and then decided I had a healthy immune system and I took a relaxed approach about washing my hands every time I touched a chicken or anything associated with them. Two weeks and 2 days after I first got them I was through with the salmonella and never had it again. I can pick up wet poo in my bare hands and eat a sandwich and it's not going to bother me. That's what a healthy immune system does when we take it out for a spin. But should the government tell someone who goes through their lives wiping down a grocery cart with alcohol wipes on the off chance another human being touched it before them to eat raw eggs that came from a commercial operation where the chicken next to the one that laid the egg might have had a raging infection and sprayed everything in the vicinity with raw poo?
They're writing about the lowest common denominator. And if they didn't they'd be derelict. You, OTOH, probably know exactly how your chickens live and what they're exposed to and what your immune system is capable of. So, you read what the USDA and the FDA write and make an informed decision. GOOD FOR YOU! That's all exactly as it should be!