Most "good for your health" advice is pop culture driven with a half life of 5 years anyway and breakfast being the most important meal of the day is a marketing slogan. In other words, no better than any various convention.
About the only things that stick are "don't stop physical and mental activity as you age" and "do stuff in moderation".
If you call it "intermittent fasting" and write a book about it, you can get a whole movement behind how healthy skipping breakfast and lunch is. And another movement preaching about how bad it is. And a followup book about what you REALLY should do ad nauseam.