Although breakfast is an important meal for getting in the vitamins, proteins, and having a well rounded diet, this article is misleading. In the article they don't offer any real evidence proving their claim; they just tend to say "researchers say" or "studies show". They are giving no real evidence to back up the claim. When doing a little bit of research I found multiple articles done by government backed websites explaining how yes there are benefits to eating breakfast, but you cant consider it the "most important".
Article evidence 1: https://pmc.ncbi.nlm.nih.gov/articles/PMC5986439/pdf/nutrients-10-00559.pdf
In this article published in the National Library of Medicine, they state that although breakfast, like other meals, is important for getting in proper nutrients, there is simply not sufficient enough research and evidence done on breakfast to support the claim that is the "most important meal". Adding that it is hard for researchers to define what breakfast is, especially across cultures and people.
Article evidence 2: https://health.clevelandclinic.org/do-you-really-need-to-eat-breakfast
This article cites Beth Czerwony, a registered diatitian with the Cleveland Clinic. This article states that "These studies aren’t randomized clinical trials that prove their importance.". The author goes on to say how hunger varies from every person; don't wake up and force yourself to eat breakfast, wait until your body tells you when and what it needs.
Article evidence 3: https://www.vailhealth.org/news/the-breakfast-debate-is-it-really-the-most-important-meal-of-the-day
This article states that "It’s important to listen to your body and eat when you’re hungry versus following a diet or rules about eating.". This article states relatively the same logic as the last. Listening to your body is more important than forcing yourself to eat when you're body is not ready.
So in the end I would say although it is important to get the correct nutrients, and not to over or under eat, this article is misleading. There is no sufficient studies to prove that breakfast is 100% the most important meal, so you can't make the claim it is. It's important to listen to your bodies needs first.