You lead with dunking on the author (yes, me) for describing a reality that you later acknowledge yourself. The article only says that SemVer in practice cannot be relied upon and describes ways how to deal with that fact of life. Nothing else.
I acknowledge the value of SemVer both here and in the article, but in the practical world it simply does not deliver the value that its proponents claim and users have to deal with it. The article is supposed to help with that.