I can counter a lot of things in this video. But what's the point. No, breakfast is not the most important meal of the day, for starters.

I buy research papers online. I have a medical background and am a lifestyle transformation coach. My clients from competitive bodybuilders and regular people whom some.are diabetics choose to skip breakfast and it has not affected them negatively in any way. And there are a ton of research out there which points to meal timing as a very distant 3rd or 4th factor in the grand scheme of things.
Look up Intermittent Fasting for example.
Also, improved blood work health markers during Ramadhan month of fasting is a clear proof.

No problem. Don't be too quick to accept conventional dogma. Explore. Always question why.