"Ungrammatical" is just not very well-outlined within the sense it is used in that quotation. In case the creator just meant that "Here are the main points" is preferable when crafting for publication, I concur. I frequently see statements that seek advice from some thing later inside the textual content https://garretthana08754.blogdomago.com/32711852/the-2-minute-rule-for-anyarticle